Take it with a grain of salt because I didn't have the time to look at the logs but my opnsense also stops working around midnight for the past few days after months of no issues. I connected a screen to my box and I'll monitor it if it happens in the next 24h.
Versions
OPNsense 25.7.11_1-amd64
FreeBSD 14.3-RELEASE-p7
OpenSSL 3.0.18
Versions
OPNsense 25.7.11_1-amd64
FreeBSD 14.3-RELEASE-p7
OpenSSL 3.0.18
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