Error while installing Android Studio in Ubuntu 16.04 - android-studio

I am trying to install android studio in ubuntu 16.04 LTS.
I downloaded the latest release and installed jdk using
sudo apt install openjdk-9-jre-headless
After the above step I am trying to run ./studio.sh after extracting Android studio zip file but It is giving me the following error. Please help.
com.intellij.ide.plugins.PluginManager$StartupAbortedException: java.lang.reflect.InvocationTargetException
at com.intellij.ide.plugins.PluginManager$2.run(PluginManager.java:96)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.ide.plugins.PluginManager$2.run(PluginManager.java:93)
... 1 more
Caused by: java.lang.ExceptionInInitializerError
at com.intellij.openapi.application.ApplicationNamesInfo.getInstance(ApplicationNamesInfo.java:49)
at com.intellij.ui.AppUIUtil.getFrameClass(AppUIUtil.java:127)
at com.intellij.ui.AppUIUtil.updateFrameClass(AppUIUtil.java:120)
at com.intellij.idea.StartupUtil.prepareAndStart(StartupUtil.java:114)
at com.intellij.idea.MainImpl.start(MainImpl.java:34)
... 6 more
Caused by: java.lang.RuntimeException: Cannot load resource: /idea/AndroidStudioApplicationInfo.xml
at com.intellij.openapi.application.ApplicationNamesInfo.<init>(ApplicationNamesInfo.java:59)
at com.intellij.openapi.application.ApplicationNamesInfo.<init>(ApplicationNamesInfo.java:30)
at com.intellij.openapi.application.ApplicationNamesInfo$ApplicationNamesInfoHolder.<clinit>(ApplicationNamesInfo.java:43)
... 11 more
Caused by: java.io.FileNotFoundException: /idea/AndroidStudioApplicationInfo.xml
at com.intellij.openapi.util.JDOMUtil.loadDocument(JDOMUtil.java:351)
at com.intellij.openapi.application.ApplicationNamesInfo.<init>(ApplicationNamesInfo.java:55)
... 13 more

I saw similar problem on StackOverflow. Please, do not install Java 9 before previous would be officially deprecated. This version is still in sdevelopment process and might be highly unstable
Unistall openJdk-9 and install Oracle-jdk-8 following this post:
http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html

Related

android studio fail and exit after restore default settings

In order to make an imported project from eclipse into android studio to work, I follow a suggestion from stackoverflow article and do the following; 
file -> manage ide settings -> restore default settings
Then everytimes android studio starts and fail and exit with the following message. How to fix that?
Internal error. Please refer to https://code.google.com/p/android/issues
java.util.concurrent.CompletionException: com.intellij.diagnostic.PluginException: Fatal error initializing 'com.android.tools.idea.AndroidInitialConfigurator' [Plugin: com.intellij]
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1739)
at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:218)
at com.intellij.openapi.application.TransactionGuardImpl.access$200(TransactionGuardImpl.java:21)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:200)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:787)
at com.intellij.openapi.application.impl.ApplicationImpl.lambda$invokeLater$4(ApplicationImpl.java:325)
at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:84)
at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:133)
at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:46)
at com.intellij.openapi.application.impl.FlushQueue$FlushNow.run(FlushQueue.java:189)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:746)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:419)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: com.intellij.diagnostic.PluginException: Fatal error initializing 'com.android.tools.idea.AndroidInitialConfigurator' [Plugin: com.intellij]
at com.intellij.serviceContainer.ComponentManagerImpl.handleInitComponentError$intellij_platform_serviceContainer(ComponentManagerImpl.kt:423)
at com.intellij.serviceContainer.MyComponentAdapter.doCreateInstance(MyComponentAdapter.kt:60)
at com.intellij.serviceContainer.BaseComponentAdapter.getInstanceUncached(BaseComponentAdapter.kt:110)
at com.intellij.serviceContainer.BaseComponentAdapter.getInstance(BaseComponentAdapter.kt:64)
at com.intellij.serviceContainer.BaseComponentAdapter.getInstance$default(BaseComponentAdapter.kt:57)
at com.intellij.serviceContainer.ComponentManagerImpl.createComponents(ComponentManagerImpl.kt:340)
at com.intellij.openapi.application.impl.ApplicationImpl.lambda$loadComponents$5(ApplicationImpl.java:348)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:178)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:688)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:634)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:64)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:165)
at com.intellij.openapi.application.impl.ApplicationImpl.loadComponents(ApplicationImpl.java:348)
at com.intellij.idea.ApplicationLoader$startApp$6$loadComponentInEdtFuture$1.run(ApplicationLoader.kt:198)
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1736)
... 23 more
Caused by: java.lang.NoClassDefFoundError: org/jetbrains/kotlin/kapt/idea/KaptProjectResolverExtension
at com.android.tools.idea.projectsystem.gradle.DisableKaptProjectResolverExtensionInitializer.run(DisableKaptProjectResolverExtensionInitializer.kt:24)
at com.android.tools.idea.AndroidInitialConfigurator.activateAndroidStudioInitializerExtensions(AndroidInitialConfigurator.java:201)
at com.android.tools.idea.AndroidInitialConfigurator.<init>(AndroidInitialConfigurator.java:71)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at com.intellij.serviceContainer.ConstructorInjectionKt.instantiateUsingPicoContainer(constructorInjection.kt:52)
at com.intellij.serviceContainer.ComponentManagerImpl.instantiateClassWithConstructorInjection(ComponentManagerImpl.kt:771)
at com.intellij.serviceContainer.MyComponentAdapter.doCreateInstance(MyComponentAdapter.kt:35)
... 36 more
Caused by: java.lang.ClassNotFoundException: org.jetbrains.kotlin.kapt.idea.KaptProjectResolverExtension PluginClassLoader(plugin=PluginDescriptor(name=Android, id=org.jetbrains.android, descriptorPath=plugin.xml, path=C:\Program Files\Android\Android Studio\plugins\android, version=2021.1.1 Patch 2, package=null), packagePrefix=null, instanceId=50, state=active)
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:215)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 46 more
-----
Your JRE: 11.0.11+9-b60-7590822 amd64 (Oracle Corporation)
C:\Program Files\Android\Android Studio\jre
I had the same problem after restore default settings (android studio bumblebee patch 2).
I had to uninstall my android studio, if you don't see uninstall.exe on your android studio folder, you can download older version of android studio, and paste uninstall.exe on your root folder, then just uninstall. Refer to this
And download Android Studio Arctic Fox (2020.3.1) Patch 4.
In my case, the problem is solved.

Cassandra with PySpark and Python >=3.6

I'm new to Cassandra and Pyspark, initially I installed cassandra version 3.11.1, openjdk 1.8, pyspark 3.x and scala 1.12. I was getting a lot of errors as shown below after running my python server.
raise Py4JJavaError(
py4j.protocol.Py4JJavaError: An error occurred while calling o33.load.
: java.lang.NoClassDefFoundError: scala/Product$class
at com.datastax.spark.connector.util.ConfigParameter.<init>(ConfigParameter.scala:7)
at com.datastax.spark.connector.rdd.ReadConf$.<init>(ReadConf.scala:33)
at com.datastax.spark.connector.rdd.ReadConf$.<clinit>(ReadConf.scala)
at org.apache.spark.sql.cassandra.DefaultSource$.<init>(DefaultSource.scala:134)
at org.apache.spark.sql.cassandra.DefaultSource$.<clinit>(DefaultSource.scala)
at org.apache.spark.sql.cassandra.DefaultSource.createRelation(DefaultSource.scala:55)
at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:355)
at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:325)
at org.apache.spark.sql.DataFrameReader.$anonfun$load$3(DataFrameReader.scala:307)
at scala.Option.getOrElse(Option.scala:189)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:307)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:225)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: scala.Product$class
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
... 23 more
I didn't know what exactly this error is but after some research I realized that the pyspark Cassandra connection is having some issues. Then I checked the versions also. During my research I saw that Cassandra versions other than 4.x is not compatible with Python3.9. I uninstalled Cassandra and tried to install cassandra4 distribution but that is throwing me another set of errors after running the command:
wget http://mirror.cogentco.com/pub/apache/cassandra/4.0-beta2/apache-cassandra-4.0-beta2-bin.tar.gz
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
cassandra : Depends: python3 (>= 3.6) but 3.5.1-3 is to be installed
Recommends: ntp but it is not going to be installed or
time-daemon
E: Unable to correct problems, you have held broken packages.
Can someone help me understand the issue? How can I install Cassandra and Pyspark along with Python3.9. Is there any version incompatibility here?
updating question based on answer
I have updated my versions on another machine:
Currently, I'm using the following versions: Pyspark 3.0.1 Cassandra:4.0 cqlsh:5.0.1 python:3.6 Scala:2.12
I tried using the connector 3.0.0 as well as 3.1.0 both are giving me errors:
UNRESOLVED DEPENDENCY: com.datastax.spark#spark-cassandra-connector_2.12;3.0.0: not found
:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
Exception in thread "main" java.lang.RuntimeException: [unresolved dependency: com.datastax.spark#spark-cassandra-connector_2.12;3.0.0: not found]
at org.apache.spark.deploy.SparkSubmitUtils$.resolveMavenCoordinates(SparkSubmit.scala:1389)
at org.apache.spark.deploy.DependencyUtils$.resolveMavenDependencies(DependencyUtils.scala:54)
at org.apache.spark.deploy.SparkSubmit.prepareSubmitEnvironment(SparkSubmit.scala:308)
at org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:871)
at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:180)
at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:203)
at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:90)
at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:1007)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:1016)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
.......
raise Exception("Java gateway process exited before sending its port number")
Exception: Java gateway process exited before sending its port number
Connection string used: --packages com.datastax.spark:spark-cassandra-connector_2.12:3.0.0 --conf spark.cassandra.connection.host=127.0.0.1 pyspark-shell as pyspark version is 3.0.1 now.
You are using wrong version of Cassandra connector - if you are using pyspark 3.x, the you need to get corresponding version - 3.0 or 3.1. Your version is for old versions of Spark:
pyspark --packages com.datastax.spark:spark-cassandra-connector_2.12:3.1.0
P.S. Cassandra 4.0 is also released already - it makes no sense use beta2

How to use Apache Spark in Arch?

I want to resolve the error when I run spark-shell
I am on arch installing apache spark from the AUR
When I run the command spark-shell I get the following error
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
I also installed the slf4j from aur and it does not help either. how can run spark on arch
It seems like you have a problem regarding Java which I canno't help you with...
Did you do the correct configuration for Spark ?
cd /etc/profile.d
sudo nano apache-spark.sh
Modifiy : SPARK_HOME=/opt/apache-spark by SPARK_HOME=/opt/apache-spark/bin
Worked for me

Android studio can't start because of ClassNotFoundException: com.android.sdklib.repository.AndroidSdkHandler

I'm trying to start android studio in ubuntu 16.04. I'm using java 8 and $JAVA_HOME is set correctly.
but when i start android studio it throws this error
java.lang.NoClassDefFoundError: com/android/sdklib/repository/AndroidSdkHandler
at com.android.tools.idea.welcome.wizard.InstallComponentsPath.<init>(InstallComponentsPath.java:90)
at com.android.tools.idea.welcome.wizard.FirstRunWizard.init(FirstRunWizard.java:63)
at com.android.tools.idea.welcome.wizard.FirstRunWizardHost.setupWizard(FirstRunWizardHost.java:99)
at com.android.tools.idea.welcome.wizard.FirstRunWizardHost.getWelcomePanel(FirstRunWizardHost.java:91)
at com.intellij.openapi.wm.impl.welcomeScreen.FlatWelcomeFrame.<init>(FlatWelcomeFrame.java:104)
at com.intellij.openapi.wm.impl.welcomeScreen.FlatWelcomeFrameProvider.createFrame(FlatWelcomeFrameProvider.java:29)
at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeFrame.showNow(WelcomeFrame.java:171)
at com.intellij.idea.IdeaApplication$IdeStarter.main(IdeaApplication.java:340)
at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:200)
at com.intellij.idea.MainImpl$1$1$1.run(MainImpl.java:52)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:366)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.ClassNotFoundException: com.android.sdklib.repository.AndroidSdkHandler PluginClassLoader[org.jetbrains.android, 10.2.2.3]
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:64)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more
I can't guarantee this as a solution for you, but having installed using this method I have had no trouble.
Uninstall (by whatever method is appropriate for you)
Then reinstall with the terminal using
sudo apt-add-repository ppa:paolorotolo/android-studio
sudo apt-get update
sudo apt-get install android-studio
I must stress that this adds and installs from an unofficial repository so it is up to you to decide if you are comfortable with installing from an unofficial source
Credit to https://itsfoss.com/install-android-studio-ubuntu-linux/ where I originally found this method.

Javafx error on Ubuntu while using netbeans

When trying to run a basic javafx application on ubuntu linux, I am seeing the following error. The error appears while using either the commandline or netbeans to run the application.
Exception in thread "main" java.lang.RuntimeException: java.lang.UnsatisfiedLinkError: Can't load library: /home/venkat/.m2/repository/com/oracle/javafx/javafx/2.1.0-beta/i386/libglass.so
at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:277)
at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:90)
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:163)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.UnsatisfiedLinkError: Can't load library: /home/venkat/.m2/repository/com/oracle/javafx/javafx/2.1.0-beta/i386/libglass.so
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1828)
at java.lang.Runtime.load0(Runtime.java:792)
at java.lang.System.load(System.java:1059)
at com.sun.glass.utils.NativeLibLoader.loadLibraryFullPath(NativeLibLoader.java:143)
at com.sun.glass.utils.NativeLibLoader.loadLibraryInternal(NativeLibLoader.java:56)
at com.sun.glass.utils.NativeLibLoader.loadLibrary(NativeLibLoader.java:31)
at com.sun.glass.ui.Application$1.run(Application.java:75)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.glass.ui.Application.loadNativeLibrary(Application.java:73)
at com.sun.glass.ui.Application.loadNativeLibrary(Application.java:85)
at com.sun.glass.ui.gtk.GtkPlatformFactory.<clinit>(GtkPlatformFactory.java:23)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at com.sun.glass.ui.PlatformFactory.getPlatformFactory(PlatformFactory.java:20)
at com.sun.glass.ui.Application.Run(Application.java:108)
at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:267)
... 5 more
This exception is caused because maven is unable to find the native libraries on the classpath.
Netbeans
You can solve the problem by adding JVM argument inside the run profile.
-Djava.library.path=/home/venkat/Programs/javafx/2.1.0-beta/rt/lib/i386/
Image
Command line
If you face the same problem while trying to run the app on the commandline, the following exports should fix it.
export JAVAFX_HOME=/home/venkat/Programs/javafx/2.1.0-beta
export CLASSPATH=\$JAVAFX_HOME/rt/lib/jfxrt.jar
export LD_LIBRARY_PATH=/home/venkat/Programs/javafx/2.1.0-beta/rt/lib/i386/
The first two env variables above fix a classpath problem which is seen when javafx runtime cannot be found.

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