Migrated fresh pihole v4 to v5, dashboard & network page empty

Problem with Beta 5.0:
After upgrade to 5.0, the dashboard is empty and the coloured boxes are not showing any figures.
the network.php page is empty and produced "an unknown error occured"
groups-adlists.php is empty as well, I cannot see any blacklist
Luckily, the Query page is showing correct results & requests.

Debug Token:
https://tricorder.pi-hole.net/xe3ntolu3y

If you accessed the dashboard while it was in v4, then you may need to clear your browser cache and then reload the page. ctrl+F5 on Chrome, for example.

Hi,

I tried that already, as well as different browsers. Always same result.
Was the upgrade only partially successful?
Pi-hole Version vDev (release/v5.0, v4.3.5-489-gd42785a) Web Interface Version vDev (release/v5.0, v4.3.2-479-g79539bd) FTL Version vDev (release/v5.0, vDev-5ad55e8)

Oh, sorry… yes upgrade worked OK, but also:

[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
*:8754 fr24feed (IPv4)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)
[80] is in use by apache2 (https://discourse.pi-hole.net/t/hardware-software-requirements/273#ports)
*:443 apache2 (IPv6)

and:

[✗] lighttpd daemon is failed

Pi-hole uses lighttpd to serve the web interface on port 80, so if apache is running too it’s going to cause issues. If you have to be running apache for some other service, you may find something of use in the following thread:

Just keep in mind that the only officially supported web server at this stage is lighttpd

thanks mate!