Webpage interface non-responsive after enabling SecSign ID after it's upgrade to 0.3.4

Spoiler Alert!

Solution:

php occ app:disable secsignid

2021-07-09T04:00:00Z

Nextcloud version: 21.0.3 Stable Channel
Operating system and version: Ubuntu 18.04.5 LTS
Apache version: Apache 2.4.48
PHP version: FPM 8.0.8, but 7.3.29 & 7.4.21 are available

The issue you are facing:


No attempts to navigate the site are successful.
Direct access to a link like https://sd.fqdn.tld/index.php/logout is successful and the login page will load, but after logging in the result is as shown in the image above.

Is this the first time you’ve seen this error?: Y

Steps to replicate it:

  1. Update the SecSign ID app to version 0.3.4
  2. Enable the newly updated SecSign ID app
  3. Navigate to any page in the Nextcloud instance

Link: https://cloud.ruppssites.com/index.php/s/gysnW7LMwLdJRoy
Password: /eeSZa3lUXyKNiz9xz9N

The output of your Apache Error log in /var/log/____:

Many errors are because my Docker for Collabora isn't running anymore. Also I tried switching PHP FPM versions to see if that would fix the problem but it didn't.
[Fri Jul 09 11:43:15.725791 2021] [proxy_fcgi:error] [pid 912] [client 208.105.116.178:55940] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:17.680326 2021] [proxy:error] [pid 1284] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:17.680384 2021] [proxy_fcgi:error] [pid 1284] [client 192.168.1.1:39712] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:17.680492 2021] [proxy:error] [pid 1285] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:17.680533 2021] [proxy_fcgi:error] [pid 1285] [client 192.168.1.1:39714] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:18.623845 2021] [proxy:error] [pid 1395] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:18.623899 2021] [proxy_fcgi:error] [pid 1395] [client 192.168.1.1:39716] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:18.633416 2021] [proxy:error] [pid 1397] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:18.633471 2021] [proxy_fcgi:error] [pid 1397] [client 192.168.1.1:39718] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:19.342384 2021] [proxy:error] [pid 1413] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:19.342439 2021] [proxy_fcgi:error] [pid 1413] [client 192.168.1.1:62579] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:19.706413 2021] [proxy:error] [pid 1417] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:19.706467 2021] [proxy_fcgi:error] [pid 1417] [client 192.168.1.1:61784] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:21.206538 2021] [proxy:error] [pid 1615] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:21.206590 2021] [proxy_fcgi:error] [pid 1615] [client 192.168.1.1:55321] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:21.973121 2021] [proxy:error] [pid 1720] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:21.973178 2021] [proxy_fcgi:error] [pid 1720] [client 192.168.1.1:62580] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:22.082828 2021] [proxy:error] [pid 1744] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:22.082889 2021] [proxy_fcgi:error] [pid 1744] [client 192.168.1.1:62581] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:26.761302 2021] [proxy:error] [pid 2235] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:26.761352 2021] [proxy_fcgi:error] [pid 2235] [client 208.105.116.178:60143] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:43:27.075853 2021] [proxy:error] [pid 2289] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:43:27.075908 2021] [proxy_fcgi:error] [pid 2289] [client 192.168.1.1:55322] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:44:24.354823 2021] [access_compat:error] [pid 4975] [client 192.168.1.1:51267] AH01797: client denied by server configuration: /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/config
[Fri Jul 09 11:44:35.456416 2021] [evasive20:error] [pid 4972] [client 192.168.1.1:51266] client denied by server configuration: /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/ocs/v2.php
[Fri Jul 09 11:45:24.760508 2021] [proxy:error] [pid 8594] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:24.760565 2021] [proxy_fcgi:error] [pid 8594] [client 208.105.116.178:60373] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:45:27.117399 2021] [proxy:error] [pid 9033] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:27.117448 2021] [proxy_fcgi:error] [pid 9033] [client 192.168.1.1:52066] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:45:44.120395 2021] [proxy:error] [pid 10879] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:44.120461 2021] [proxy_fcgi:error] [pid 10879] [client 208.105.116.178:60375] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:45:44.120505 2021] [proxy:error] [pid 10878] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:44.120550 2021] [proxy_fcgi:error] [pid 10878] [client 208.105.116.178:60376] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:45:45.393097 2021] [proxy:error] [pid 10903] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:45.393164 2021] [proxy_fcgi:error] [pid 10903] [client 208.105.116.178:60377] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:45:45.661348 2021] [proxy:error] [pid 11072] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8001 (*) failed
[Fri Jul 09 11:45:45.661406 2021] [proxy_fcgi:error] [pid 11072] [client 192.168.1.1:39910] AH01079: failed to make connection to backend: localhost
[Fri Jul 09 11:46:17.208081 2021] [access_compat:error] [pid 12440] [client 208.105.116.178:60379] AH01797: client denied by server configuration: /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/config
[Fri Jul 09 11:57:51.687286 2021] [proxy_fcgi:error] [pid 1225] [client 192.168.1.1:49354] AH01071: Got error 'PHP message: PHP Deprecated:  Required parameter $tid follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $lat follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $lon follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $alt follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $tst follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $acc follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $batt follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1911PHP message: PHP Deprecated:  Required parameter $id follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $lat follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $lon follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $timestamp follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $accuracy follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $altitude follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $batt follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $speed follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $bearing follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1968PHP message: PHP Deprecated:  Required parameter $id follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986PHP message: PHP Deprecated:  Required parameter $dev follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986PHP message: PHP Deprecated:  Required parameter $acct follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986PHP message: PHP Deprecated:  Required parameter $alt follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986PHP message: PHP Deprecated:  Required parameter $batt follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986PHP message: PHP Deprecated:  Required parameter $gprmc follows optional parameter $devicename in /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/apps/phonetrack/lib/Controller/LogController.php on line 1986'
[Fri Jul 09 12:04:09.873306 2021] [access_compat:error] [pid 7311] [client 192.168.1.1:41152] AH01797: client denied by server configuration: /home/support/domains/cloud.ruppssites.com/public_html/nextcloud/data/.ocdata