ClassNotFoundException: com.atlassian.jira.logging.MultiTenantJiraHomeAppender

[Victor Viana]

when I run the command "atlas-debug" to start the server ("FastDev Jira SDK") is giving the following error in the prompt:

log4j:ERROR Could not instantiate appender named "filelog".
log4j:ERROR Could not instantiate class [com.atlassian.jira.logging.MultiTenantJiraHomeAppender].
java.lang.ClassNotFoundException: com.atlassian.jira.logging.MultiTenantJiraHomeAppender

[Sultan Maiyaki · Accepted solution]

Can you try to run the atlas-clean command https://developer.atlassian.com/display/DOCS/atlas-clean to clear the folders and then try again

[Matthias Gaiser _K15t_]

I know this question is some years old, but in case, you also get the error and a clean does not help you:

It might be the case that you have an old log configuration for JIRA 5.x in your plugin which you should update and replace the MultiTenantJiraHomeAppender by the JiraHomeAppender.

This article states that for JIRA 5 the MultiTenantJiraHomeAppender had to be used, in JIRA 6 it is only the JiraHomeAppender.