Error removing share

Hello good afternoon
A pleasure to say hello, I hope you can help me with the error I am experiencing in Nextcloud 18.0.4
When sharing a folder it gives me the error
error removing share
the detail is that i’m not removing i’m just sharing a folder
the funny thing is that even so when the nextcloud page updates, if the folder is shared correctly.

Please, if someone can help me, I appreciate it. It is uncomfortable to see that erro

Please follow the support template.

Thank you.

I do not understand what it tells me, but still thanks, the solution for my problem was simply configure the email to send in basic settings