Event ID 6398 How to fix 6398 Issue
Go to Central Admin – monitoring – review job definitions – job history (left) and change the view (right) to Failed jobs. Click on Failed link and you should get similar error messages logged. Review the job to fix and if not needed disable it.

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This solution among all the solutions that I was looking into for a week was successful. Actually it removes the question instead of solving it but still better than others. I’m using sharepoint 2019 and SQL 2019.
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Thanks any time hope it solved your problem
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I know this is very old since 2014 but i m happy it helped now
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