Nextcloud box w/o browser acces, only ssh connection

Hi,
after setting up nextcloud box, no browser access and connection to nexcloud is possible. I have only access via ssh to nextcloud box.

I did an update & upgrade and did snap refresh. After refresh came up following text…
error: cannot perform the following tasks:

  • Stop snap “nexcloud” services ([stop snap.nextcloud.apache.service] failed with exit status 5: Failed to stop snap.nextcloud.apache.service: Unit snap.nextcloud.apache.service not loaded.)

I rebooted nc box and refreshed again, but then the 2nd error message was different:
error: cannot perform the following tasks:

  • Stop snap “nextcloud” services ([stop snap.nextcloud.renew-certs.service] failed with exit status 5: Failed to stop snap.nextcloud.renew-certs.service: Unit snap.nextcloud.renew-certs.service not loaded.
    )

Several refreshes but the error message is afterwards always the same 2nd text message.

Checking the service list apache is not registered/missing.

I tried wget localhost, but connection was refused…

This is my actual snap list:
Name Version Rev Developer Notes
nextcloud 9.0.53snap2 48 nextcloud -
snapweb 0.21.2 25 canonical -
ubuntu-core 16.04.1 424 canonical -

Thanks in advance for every hint & help,
carmelo