This is your issue, I’m quite sure your rwdata partition is full based on what you are describing.
You need to follow this tutorial: APIM Sync Settings Not Saving, VER_ERR08 Errors, Cannot Perform Master Reset or Upgrades/Updates (Solved)
Please note that if the rwdata partition cleaner does not work for you, you need to perform the other “legacy” methods until enough room is made for the upgrade to succeed.
You can try a master reset before trying the rwdata partition cleaner tool.
Also, please provide the full log in the future, since you left some important information out.