Hi, i got an error after updating the deck plugin. Here is the error
Technical information
=====================
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.
What I did was download the current version that I had of nextcloud .zip file from the nextcloud website. then went into where my nextcloud dir location and opened the folder I made sure to show hidden files and deleted everything from the dir besides config and data folder. Then I went into the zip file that I download made sure show hidden files is on and selected everything besides config then copied everything over to the nextcloud dir. Then I fixed folder permissions in nextcloud dir made www-data the owner. Once I did that I open up the url went into nextcloud and it ask me to preform a upgrade, which I did and fixed my issue. Hope this helps
Make sure to have a backup of the server incase something brakes you can recover.