davfs2 crash while using issuing command-not-found

[Schuft]

When typing an unknown command into bash while staying in a davfs2 mounted directory, this error appears:

mediacenter@mediacenter:~/hidrive_crypt/users/media-1234$ öll
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.2.44
mediacenter@mediacenter:~/hidrive_crypt/users/media-1234$ ll
ls: Öffnen von Verzeichnis . nicht möglich: Der Socket ist nicht verbunden
(in eng: ls: opening directory not possible: the soket is not connected)

Mount is still present:

mediacenter@mediacenter:~/hidrive_crypt/users/media-1234$ mount
https://media-1234.webdav.hidrive.strato.com on /home/mediacenter/hidrive_crypt type davfs (rw,nosuid,noexec,nodev,_netdev,user=mediacenter)

But is in a complicated state:

mediacenter@mediacenter:~$ ll ~ | grep hidrive_crypt
ls: Zugriff auf /home/mediacenter/hidrive_crypt nicht möglich: Der Socket ist nicht verbunden
d????????? ? ? ? ? ? hidrive_crypt/