Gradle Sync Failed with Exception - android-studio

I’m new developer in kotlin.
I started a new project in android studio, but when the compiler build the project he said Gradle Sync Failed.
so I look on the internet and I am following the instructions (update Gradle) but nothing happens. always the same message “Gradle Sync Failed”.
I tried all day yesterday and this morning to fix it. Anyone can help me.
Thank you

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Import old project into Android Studio?

I am trying relentlessly to import this project into Android studio as part of my Udacity Android development courses. I tried everything from forking on GitHub and cloning it into my Android studio to changing the Gradle settings, the Java version, following the recommended settings by android studio, etc.
https://github.com/udacity/ud839_CustomAdapter_Example
Nothing seems to be working. I keep getting errors. Each time I fix the error I get another error. Can someone please guide me as to what exactly is the proper procedure for importing an older project into the android setting and updating the settings? I seem to be experiencing the same issue every time I am completing online courses. The existing projects appear to be completed through older versions of Java and Android studio. Any help is greatly appreciated.
Thank you

Android studio gradle sync failing everytime

I have downloaded android studio But when I start it always there is some kind of error when Gradle is syncing I really need help I have searched on youtube and google but I couldn't fix it but now I'm trying on StackOverflow if I can find out how to fix it
It is giving an error called:-
Invalid injection android support version '202.7660.26.42.7351085',
expected to be of the form 'w.x.y.z'
Plzz help
As we can see from YouTrack it's an Android studio error
Here: https://youtrack.jetbrains.com/issue/IDEA-268774
JetBrains developers gave a reference to solution:
https://issuetracker.google.com/issues/187470273?pli=1
Hope this helps you. If not - I suggest that you reinstall Gradle to a newer version.

AAPT: error: failed writing to 'c: ....\r.txt': The data is invalid. (13)

First off, I am a student learning the basics of app development in Android Studio. With that in mind, please don't answer in short hand, acronyms or other technical jargon as I probably won't know what you are saying.
I have tried several fixes that appear across the web for this issue. These fixes include, using the clean and rebuild options under Build in android studio. Fully uninstalling and reinstalling Android Studio, running the program and creating a new app and then looking for the error, the invalidate cache / restart option under file and changing the android gradle plugin version and gradle version under Build > edit build types > project tab. None of these have been successful.
The error popped up for me in September or early October after an update. I was able to create my hello world app and our first simple app without any issues. After the error appeared all apps refuse (including the ones that were working previously) to run or render in the emulator because of this error. I have spent hours of 'office hours' with the instructor who has years of experience with android studio and this has him stumped as well.
I have 2 weeks of this course left and a final project to create. I would be eternally grateful for a solution to this problem.
Thank you.

How to resolve symbols #mipmap and #style in Flutter project?

A while ago my designed Flutter app was running like it should in simulation (virtual device) in Android Studio. After some updates of both Flutter as Android studio I am not able to get the app in simulation. I am new to Flutter and Android studio (have a little knowledge of Xcode, 2 apps in the store) so I have looked at stackoverflow first to find a solution. All tried suggestions did not worked for me and I am hoping somebody can help me.
I have an original version of the project which was running in simulation mode. Now I am working in a duplicated version to find out how to get things up and running again. It worked before but why does Flutter or Android Studio give an error now? The folders and content do exist. Perhaps it is a simple thing to solve but it is not in my knowledge.
What to do to solve the error message I get as shown in the screendump?
The problem seems to be with the resources,
this should help.
Android Studio error: cannot resolve symbol in Xml
Or try to run "flutter clean" (usually solves many problems)
Flutter studio sometimes does not resolve those (no idea why).
Try opening the same Android project in Android studio and check it from there.
Once back, try File->Invalidate Caches/Restart
If they exist and the name is right (without extension), then it could be it.

What to do? After trying to update Android Studio it doesn't want to startup anymore

I tried to update Android Studio from 2.1.2 to 2.2.x
After downloading patches AS tried to perform patch but this wouldn't succeed and since then I can't seem to get Android Studio started anymore.
Apparently something went wrong with pluginManager, but so far I can't seem to figure out how to fix this.
Does anyone have an idea how to fix this?
Errormessage after I select a project i want to open at startup AS:
Cannot load project: com.intellij.ide.plugins.PluginManager$StartupAbortedException: com.intellij.diagnostic.PluginException: com/android/builder/model/BaseArtifact [Plugin: org.jetbrains.android]

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