I logged into the web gui and had a message at the top. I downloaded the following crash but not sure under what topic to put it...
FreeBSD 11.3-STABLE #243 abf8cba50ce(RELENG_2_4_5): Tue Jun 2 17:53:37 EDT 2020 email@example.com:/build/ce-crossbuild-245/obj/amd64/YNx4Qq3j/build/ce-crossbuild-245/sources/FreeBSD-src/sys/pfSense
Crash report details:
[09-Dec-2020 08:46:48 America/Chicago] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 39018120 bytes) in Unknown on line 0
No FreeBSD crash data found.
That is usually some page that tried to display more data than php allows. So if you tried to run something in Diag > Command Prompt with a very large output for example.
It's not a system crash.