Fatal Error: Cannot open TUN/TAP device ...

[dan2112]

I am receiving an error on my OpenVPN server:

May 19 18:27:22	openvpn	913	OpenVPN 2.6_beta1 armv7-portbld-freebsd14.0 [SSL (OpenSSL)] [LZO] [LZ4] [MH/RECVDA] [AEAD] [DCO]
May 19 18:27:22	openvpn	913	library versions: OpenSSL 1.1.1t-freebsd 7 Feb 2023, LZO 2.10
May 19 18:27:22	openvpn	913	NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
May 19 18:27:22	openvpn	913	Initializing OpenSSL support for engine 'devcrypto'
May 19 18:27:22	openvpn	913	WARNING: experimental option --capath /var/etc/openvpn/server2/ca
May 19 18:27:22	openvpn	913	Cannot open TUN/TAP dev /dev/tun2: No such file or directory (errno=2)
May 19 18:27:22	openvpn	913	Exiting due to fatal error

Device: Netgate 3100
23.01-RELEASE (arm)
built on Fri Feb 10 20:06:58 UTC 2023
FreeBSD 14.0-CURRENT

Any clues as to why it stopped working?