Hello,
I encountered this problem (https://forum.opnsense.org/index.php?topic=28831.msg140717#msg140717) with my setup (OPNsense 23.7.2-amd64).
here (https://forum.opnsense.org/index.php?topic=28831.msg140721#msg140721) it is described that for troubleshooting ssl_stapling_file can be used.
How can I use ssl_stapling_file?
Does anyone have any ideas about this?
I get this error message virtually every time I first open a page in Firefox:
MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING
In some cases, it then does not continue beyond this error message on subsequent page loads.
But I would not like to miss the OSCP-Stapling feature.