[Solved] Upgrade 19.0.13 to 20.0.14 failed and now updater is stuck

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Nextcloud version (eg, 20.0.5): 19.0.13
Operating system and version (eg, Ubuntu 20.04): Synology DSM 6.2
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4
PHP version (eg, 7.4): 7.2

The issue you are facing:

I noticed that I was on a no longer maintained version and chose to upgrade. When upgrading from version 19.0.13 to 20.0.14 the “verifying integrity” failed. From what I understand this is because php was not allocated enough memory.

I have in the php-settings synology web-station allowed 512MB of memory.

However the updater seem to be stuck on. When I try to update again i get a screen saying “Step 5 is currently in process. Please reload this page later.”. In another forum i found suggestions deleting a file labeled for this update instance in data/updater/ but I could not find such a file.

Any suggestions on how to get out of the updater?

Found the updater-********** folder.