System Error occurs when opening the Cloud Migration Assistant
Platform Notice: Cloud and Data Center - This article applies equally to both cloud and data center platforms.
Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptom
While opening one of the Cloud Migration Assistants, a System Error screen is displayed:
The relevant error message in this screen can be found in the Cause section:
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')
Environment
This document applies to Jira Cloud Migration Assistant (JCMA) and Confluence Cloud Migration Assistant (CCMA):
From Server to Cloud
From Data Center to Cloud
With a MySQL database
Cause
The error is caused due to a change to the getObject() function, introduced in the MySQL driver 8.0.23 (Changes in MySQL Connector/J 8.0.23).
Solution
There is currently only a workaround, which is to downgrade to the MySQL 8.0.22 driver.
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