Crash on Windows when probing serial LED strip

[wizzomafizzo]

C:\LaunchBox\ThirdParty\TapTo>TapTo.exe
TapTo v2.0.0-dev
3:51PM INF TapTo v2.0.0-dev
3:51PM INF config path = C:\LaunchBox\ThirdParty\TapTo\tapto.ini
3:51PM INF app path = C:\LaunchBox\ThirdParty\TapTo\TapTo.exe
3:51PM INF connection_string =
3:51PM INF allow_commands = false
3:51PM INF disable_sounds = false
3:51PM INF probe_device = true
3:51PM INF exit_game = false
3:51PM INF exit_game_blocklist = []
3:51PM INF debug = true
3:51PM DBG opening database
3:51PM DBG starting API service
3:51PM DBG running platform setup
Device address: 192.168.0.169
Press Enter to exit
3:51PM DBG acr122 reader found: ACS ACR122U PICC Interface 0
3:51PM DBG connecting to COM1
3:51PM DBG running sam configuration
3:51PM DBG failed to open detected serial port, blocklisting: COM1 error="timeout waiting for ACK"
3:51PM DBG connecting to COM3
3:51PM DBG failed to open detected serial port, blocklisting: COM3 error="Serial port busy"
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x20 pc=0x4d1a73]

goroutine 34 [running]:
github.com/wizzomafizzo/tapto/pkg/readers/pn532_uart.(*Pn532UartReader).Detect(0xc00007a640?, {0xc0000ae280, 0x1, 0x69cca8?})
C:/Users/calla/tapto/pkg/readers/pn532_uart/pn532_uart.go:305 +0x353
github.com/wizzomafizzo/tapto/pkg/service.connectReaders({0x69ef80, 0x9b9e80}, 0xc00017c000, 0xc00007a640, 0xc000300000)
C:/Users/calla/tapto/pkg/service/readers.go:96 +0x586
github.com/wizzomafizzo/tapto/pkg/service.readerManager.func3()
C:/Users/calla/tapto/pkg/service/readers.go:198 +0xee
created by github.com/wizzomafizzo/tapto/pkg/service.readerManager in goroutine 8
C:/Users/calla/tapto/pkg/service/readers.go:183 +0x265