Can not decrypt [OC\Encryption\Exceptions\DecryptionFailedException]

[adamlove86]

Hi there, have been trying to run preview:generate-all or preview:pre-generate and I receive this error:

root@snappy-nextcloud:/var/snap/nextcloud/current/nextcloud/extra-apps# nextcloud.occ preview:pre-generate
The process control (PCNTL) extensions are required in case you want to interrupt long running commands - see http://php.net/manual/en/book.pcntl.php

                                                                                                                   
  [OC\Encryption\Exceptions\DecryptionFailedException]                                                             
  Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with y  
  ou.                                                                                                              
                                                                                                                   

preview:pre-generate

Let me know if there's any other info I can send you, and thanks for your help.

[adamlove86]

Just had a bit of a look around, and it may be because the Snap folder is read only?
I'm running nextcloud snap 11.0, and current version of preview generator.

[rullzer]

Mmmm nah it seems you are using encryption. I'll see if I can handle things a bit more gracefully.

[hanzei]

Same problem here with nextcloud 11.0.2 and encryption

[rullzer]

Summoning @schiessle.
My bet is this app won't properly work with encryption. Since it runs from the cli. So there are no keys available right?

[schiessle]

Yes, in order to access the files you need the users private key which again is encrypted with the users login password (if no master key is enabled).

My suggestion: check if encryption is enabled without the master key. If that's the case just do nothing or write a log message and disable the app again.

[rullzer]

@schiessle yes that is what I was thinking. I'll take care. Thnx

[rullzer]

@schiessle ok so new question. How do I actually check that :P?

[rullzer]

You know what let me just get in the Encryption manager thingy and block all encryption stuff for now. Then I can later always relax the constraint