Cannot update HA Core

HA running on Wyse thin client terminal.

Updated HA system to 10.5.

Run ha core update from command line - completed no errors.

System/Settings still showing 1 update from HA Core 2023.5.4 to 2023.9.2

Click install - returns to update screen unchanged.

Logs report:-

Last logged: 12:28:18

Error in database connectivity during commit: Error executing query: (sqlite3.OperationalError) database or disk is full (Background on this error at: Error Messages — SQLAlchemy 2.0 Documentation). (retrying in 3 seconds)

then

Last logged: 12:28:21

SQLAlchemyError error processing task CommitTask(): Can’t reconnect until invalid transaction is rolled back. Please rollback() fully before proceeding (Background on this error at: Error Messages — SQLAlchemy 2.0 Documentation)

I have limited unix skils and absoluely no sql skills.

df -H reports no space isues.

Not sure what to do now.

I have seen mention of stopping HA core before running update. Would this help?

Thanks in advance for any suggestions.