log4j:ERROR Attempted to append to closed appender named [eproc-file-out] - log4j

Question

I am getting the error in my server.log file which is given below:
2018-03-23 17:34:38,857 ERROR [stderr] (default task-8) log4j:ERROR Attempted to append to closed appender named [eproc-file-out].
My question is that can anyone explain regarding the category tag and can I use the same appender-ref ref="eproc-file-out" for all the category tags....???
My log4j.xml configuration file is given below:
<appender name="eproc-file-out" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="${jboss.server.log.dir}/eProcurement/eProcurementServerLog.log"/>
<param name="Append" value="true"/>
<param name="DatePattern" value="'.'dd'.txt'"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n"/>
</layout>
</appender>
<category name="com.presentation">
<priority value="DEBUG"/>
<appender-ref ref="eproc-file-out"/>
</category>
<category name="com.service">
<priority value="DEBUG"/>
<appender-ref ref="eproc-file-out"/>
</category>
<category name="com.dao">
<priority value="DEBUG"/>
<appender-ref ref="eproc-file-out"/>
</category>
<category name="org.apache">
<priority value="DEBUG"/>
<appender-ref ref="eproc-file-out"/>
</category>
<category name="org.springframework">
<priority value="DEBUG"/>
<appender-ref ref="eproc-file-out"/>
</category>
<category name="com.metaparadigm">
<priority value="ERROR"/>
<appender-ref ref="eproc-file-out"/>
</category>
<root level="debug">
<appender-ref ref="eproc-file-out"/>
</root>
I did google as well as referred to StackOverflow for this error but I didn't found the solution for my question regarding category tag.
Any help is appreciated!
Thanks

Answer 1

From log4j manual:
public class Category
This class has been deprecated and replaced by the Logger subclass. It will be kept around to preserve backward compatibility until mid 2003.
Logger is a subclass of Category, i.e. it extends Category. In other words, a logger is a category...
...
There is absolutely no need for new client code to use or refer to the Category class. Whenever possible, please avoid referring to it or using it.