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https://issues.apache.org/jira/browse/LOG4J2-1831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893985#comment-15893985
]
Mikael Ståldal commented on LOG4J2-1831:
----------------------------------------
Other places here: https://issues.apache.org/jira/browse/LOG4J2-1834
> NullPointerException in HtmlLayout
> ----------------------------------
>
> Key: LOG4J2-1831
> URL: https://issues.apache.org/jira/browse/LOG4J2-1831
> Project: Log4j 2
> Issue Type: Bug
> Components: Layouts
> Affects Versions: 2.8
> Reporter: Edward Serebrinskiy
> Assignee: Gary Gregory
> Fix For: 2.8.2
>
>
> Got following NullPointerException by using SMTP appender.
> {code}
> AsyncLogger error handling event seq=233, value='[ERROR calling class
> org.apache.logging.log4j.core.async.RingBufferLogEvent.toString():
> java.lang.NullPointerException]':
> org.apache.logging.log4j.core.appender.AppenderLoggingException: An exception
> occurred processing Appender Mail
> at
> org.apache.logging.log4j.core.appender.DefaultErrorHandler.error(DefaultErrorHandler.java:75)
> at
> org.apache.logging.log4j.core.config.AppenderControl.handleAppenderError(AppenderControl.java:165)
> at
> org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:158)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:448)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:433)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417)
> at
> org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:79)
> at
> org.apache.logging.log4j.core.async.AsyncLogger.actualAsyncLog(AsyncLogger.java:337)
> at
> org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:156)
> at
> org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45)
> at
> org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
> at
> com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:129)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.logging.log4j.LoggingException: Error occurred while
> sending email
> at
> org.apache.logging.log4j.core.net.SmtpManager.sendEvents(SmtpManager.java:175)
> at
> org.apache.logging.log4j.core.appender.SmtpAppender.append(SmtpAppender.java:181)
> at
> org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
> ... 15 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.logging.log4j.core.layout.HtmlLayout.toSerializable(HtmlLayout.java:170)
> at
> org.apache.logging.log4j.core.layout.HtmlLayout.toSerializable(HtmlLayout.java:50)
> at
> org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:301)
> at
> org.apache.logging.log4j.core.net.SmtpManager.writeBuffer(SmtpManager.java:204)
> at
> org.apache.logging.log4j.core.net.SmtpManager.writeContent(SmtpManager.java:190)
> at
> org.apache.logging.log4j.core.net.SmtpManager.formatContentToBytes(SmtpManager.java:182)
> at
> org.apache.logging.log4j.core.net.SmtpManager.sendEvents(SmtpManager.java:163)
> ... 17 more
> {code}
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