No notifications with Talk

I have notifications with all other applications but Talk. They work for Agenda, Tasks, Deck but for a few weeks, I don’t get notifications any more with Talk.

Nextcloud version (eg, 24.0.1): 26.0.2
Talk Server version (eg, 14.0.2): 16.0.4
Custom Signaling server configured: no
Custom TURN server configured: yes, same server
Custom STUN server configured: yes, same server

In case the web version of Nextcloud Talk is involved:
Operating system (eg, Windows/Ubuntu/…): Windows 11
Browser name and version (eg, Chrome v101): Firefox, Nextcloud application, Ferdium

In case mobile Nextcloud Talk apps are involved:
Talk iOS version (eg, 14.0.2): replace me
Talk Android version (eg, 14.0.2): 16.0.1, on AOSP with Nextcloud Services 1.0-b15

The issue you are facing:
No notification when a new message arrives or for a call

Is this the first time you’ve seen this error? (Y/N): Yes, for a few weeks

The output of your Nextcloud log in Admin > Logging or errors in nextcloud.log in /var/www/:

No recent log with Talk

The output of your Apache/nginx/system log in `/var/log/____`:
httpd/error.log
[Sun Jun 11 00:00:08.282789 2023] [lbmethod_heartbeat:notice] [pid 3559:tid 3559] AH02282: No slotmem from mod_heartmonitor
[Sun Jun 11 00:00:08.286488 2023] [mpm_event:notice] [pid 3559:tid 3559] AH00489: Apache/2.4.53 (AlmaLinux) OpenSSL/3.0.7 mod_fcgid/2.3.9 configured -- resuming normal operations
[Sun Jun 11 00:00:08.286509 2023] [core:notice] [pid 3559:tid 3559] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
[Sun Jun 11 04:44:12.298715 2023] [cgid:error] [pid 100929:tid 101126] [client 128.14.134.134:58012] AH01264: script not found or unable to stat: /var/www/cgi-bin/config.exp
[Sun Jun 11 06:31:33.594480 2023] [core:error] [pid 101156:tid 101196] [client 83.97.73.89:58300] AH10244: invalid URI path (/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh)
[Sun Jun 11 06:33:29.913647 2023] [proxy_fcgi:error] [pid 100929:tid 101137] [client 78.196.56.168:15087] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Sun Jun 11 11:07:36.575650 2023] [proxy_fcgi:error] [pid 101156:tid 101213] [client 78.196.56.168:15616] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Sun Jun 11 11:07:47.092101 2023] [autoindex:error] [pid 100928:tid 101101] [client 78.196.56.168:15771] AH01276: Cannot serve directory /var/www/html/nextcloud/apps/spreed/: No matching DirectoryIndex (index.php,index.html) found, and server-generated directory index forbidden by Options directive
[Sun Jun 11 12:48:06.488271 2023] [proxy_fcgi:error] [pid 101156:tid 101209] [client 78.196.56.168:19597] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Sun Jun 11 15:26:19.399473 2023] [proxy_fcgi:error] [pid 101156:tid 101218] [client 78.196.56.168:19872] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Sun Jun 11 15:26:25.187487 2023] [autoindex:error] [pid 101156:tid 101208] [client 78.196.56.168:20005] AH01276: Cannot serve directory /var/www/html/nextcloud/apps/spreed/: No matching DirectoryIndex (index.php,index.html) found, and server-generated directory index forbidden by Options directive
[Sun Jun 11 18:27:18.952207 2023] [proxy_fcgi:error] [pid 101156:tid 101204] [client 78.196.56.168:30548] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Sun Jun 11 20:34:14.033932 2023] [core:error] [pid 101156:tid 101213] [client 83.97.73.89:36072] AH10244: invalid URI path (/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh)
[Sun Jun 11 22:05:22.146583 2023] [proxy_fcgi:error] [pid 101156:tid 101200] [client 78.196.56.168:37463] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Mon Jun 12 06:28:52.724297 2023] [proxy_fcgi:error] [pid 101156:tid 101199] [client 5.51.235.241:50905] AH01071: Got error 'Primary script unknown', referer: https://next.mandarinerobotique.com/remote.php/dav/addressbooks/users/ltron/contacts/
[Mon Jun 12 07:05:49.447885 2023] [access_compat:error] [pid 100929:tid 101134] [client 5.51.235.241:56141] AH01797: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata
[Mon Jun 12 07:07:07.856882 2023] [access_compat:error] [pid 100929:tid 101131] [client 5.51.235.241:56310] AH01797: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata

Your browser log if relevant (javascript console log, network log, etc.):

PASTE HERE