Crash when trying to unlock Mutex while stopping service

[perk11]

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x50b30d]

goroutine 207 [running]:
sync.(*Mutex).Unlock(...)
        /usr/lib/go-1.18/src/sync/mutex.go:210
main.stopService({0xc00001e690, 0x21})
        /opt/src/large-model-proxy/main.go:595 +0x62d
main.reserveResources(0xc00001e390?, {0xc00001e390, 0x22})
        /opt/src/large-model-proxy/main.go:419 +0x457
main.startService({{0xc00001e390, 0x22}, {0xc0000186b4, 0x4}, {0xc0000186c0, 0x9}, {0xc0000186b8, 0x5}, {0xc00001e3c0, 0x29}, ...})
        /opt/src/large-model-proxy/main.go:277 +0x225
main.startServiceIfNotAlreadyRunningAndConnect({{0xc00001e390, 0x22}, {0xc0000186b4, 0x4}, {0xc0000186c0, 0x9}, {0xc0000186b8, 0x5}, {0xc00001e3c0, 0x29}, ...})
        /opt/src/large-model-proxy/main.go:234 +0x258
main.handleConnection({0x56e2b0, 0xc0004ba138}, {{0xc00001e390, 0x22}, {0xc0000186b4, 0x4}, {0xc0000186c0, 0x9}, {0xc0000186b8, 0x5}, ...})
        /opt/src/large-model-proxy/main.go:209 +0x1d8
created by main.startProxy
        /opt/src/large-model-proxy/main.go:187 +0x3b8

[perk11]

Another similar crash:

2025/01/21 02:02:51 [service_name] (service (127.0.0.1:36952->127.0.0.1:18080) to client ([::1]:8080->[::1]:36514)) error during data transfer: writeto tcp [::1]:8080->[::1]:36514: readfrom tcp 127.0.0.1:36952->127.0.0.1:18080: use of closed network connection
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x51fafb]

goroutine 382 [running]:
sync.(*Mutex).TryLock(...)
        /usr/lib/go/src/sync/mutex.go:99
main.canBeStopped({0xc00014a280?, 0xc0003b3e80?})
        /cloud/Dropbox/Projects/large-model-proxy/main.go:487 +0x5b
main.startService.func1()
        /cloud/Dropbox/Projects/large-model-proxy/main.go:306 +0xd5
created by time.goFunc
        /usr/lib/go/src/time/sleep.go:177 +0x2d