Group folders won't open in the nextcloud app

[Anonymoususer]

Hey everyone,
I have a problem that my users can’t open group folders on the nextcloud app. When they try to open a folder the app crashes and this comes up:

java.lang.illegalArgumentException: Comparsion method violates its general contract!
at java.util.TimSort.mergeHi(TimSort.java:899)
at java.util.TimSort.mergeAt(TimSort.java:516)
at java.util.TimSort.mergeForceCollapse(TimSort.java:457)
…
…
more Errors…

My cloud is running on 18.0.3.* What do you think what is wrong?

Thanks for help!

[anon71540698]

@Anonymoususer

My cloud is running on 13.0.3…

Nextcloud v.13?
That’s quite old… End of life over a year ago…

Maybe this can help

Error with elasticsearch

Hi, i have installed elasticsearch on my Ubuntu 18.10 and Nextcloud 13.05. When i create a new Index i receive the following error: Progress: /10 done │ Error: 6/6 │ Exception: Elasticsearch\Common\Exceptions\ServerErrorResponseException │ Message: java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: field [content] not present as part of path [attachment.content] Can anybody help me? What can i do? Regards Hermann

[Anonymoususer]

Sorry not 13 of course 18.0.3. Sorry my bad.