System error when trying to access migration assistant

[Timothy Medeiros]

When trying to access /admin/migration.action I get the following error (URLs to my confluence snipped for security):

Oops - an error has occurred

 System Error

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Cause

    Invocation of method 'getInitialState' in class com.atlassian.migration.agent.web.AppAction threw exception com.atlassian.util.concurrent.LazyReference$InitializationException: java.lang.ClassCastException: class java.time.LocalDateTime cannot be cast to class java.lang.String (java.time.LocalDateTime and java.lang.String are in module java.base of loader 'bootstrap') at /templates/app.vm[line 21, column 44]

    java.lang.ClassCastException: class java.time.LocalDateTime cannot be cast to class java.lang.String (java.time.LocalDateTime and java.lang.String are in module java.base of loader 'bootstrap')

    class java.time.LocalDateTime cannot be cast to class java.lang.String (java.time.LocalDateTime and java.lang.String are in module java.base of loader 'bootstrap')

Referer URL

http://[snip]/admin/viewgeneralconfig.action

[AAMIR ANSARI · Accepted solution]

Hi @Timothy Medeiros 

Thank you for reaching out to Atlassian Community.

I understand you see errors when using the migration assistant plugin.

Looking at the error below, I can confirm that it is caused due to MySQL driver version.

java.lang.ClassCastException: class java.time.LocalDateTime cannot be cast to class java.lang.String (java.time.LocalDateTime and java.lang.String are in module java.base of loader 'bootstrap')

 Please check the below bug which details this issue.

MySQL 8 driver causes class java.time.LocalDateTime cannot be cast to class java.lang.String error

As of now, the only workaround is to downgrade to MySQL 8.0.22 driver.

I hope this helps!

Thanks,

Aamir

[Timothy Medeiros]

Thank you, this did the trick!