Please look at bug #1899075 if it look similar to your use case.
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Title:
package mysql-server-8.0 8.0.20-0ubuntu0.20.04.1 failed to
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"""
mysqld will log errors to /var/log/mysql/error.log
mysqld is running as pid 56734
Error: Unable to shut down server with process id 56734
"""
Since there is not enough information in your report to begin triage or to
Need more information
Thank you for taking the time to file a bug report.
"""
mysqld will log errors to /var/log/mysql/error.log
mysqld is running as pid 56734
Error: Unable to shut down server with process id 56734
"""
Since there is not enough information in your report to begin triage or to
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mysql-8.0 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1876900
Title: