Hi @Assem E
These sorts of Javascript errors are very tricky to find their root cause. It could be a browser cache issue or a broken customisation, such as a ScriptRunner script or a faulty plugin code (a recent update of a plugin).
Are all users experiencing the same error, or is it only one user? Have you tried clearing your browser cache, or tested with another browser or in incognito mode?
Thank you for your reply. Now I found out that the problem was in sprint
Gonna close this sprint and try again
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