My drone refuses to be armed

#1

Hello everyone
I recently mounted a drone based pixhawk 4 (holybro) but today my drone refuses to arm and I really do not understand why.
my drone was flying very well in 1.9.0 and it seems to me that the problem occurred following the update in 1.9.1 because I have not made a parameter change in-temp.
I do not know what it can come from yet I searched the forum if solutions had been found on this kind of problem.

my gps seems to work:

below the result of a ls /dev and a ms5611 start

quoted qgroundcontrol software does not show me error


qground2

in the logs I see 2 error
[E] at :0 - “serialnmea: No known GPS device found. Specify the COM port via QT_NMEA_SERIAL_PORT.”
[E] at C:\projects\qgroundcontrol\src\PositionManager\PositionManager.cpp:139 - “QGCPositionManager error 1”

but I’m not sure my problem comes from there … because I’m not sure I understand the error messages either

looking for this or this QT_NMEA_SERIAL_PORT parameter could be changed i have to try modified the serial port baudrate
gps_baud

and when restarting qgroundcontrol displays the error below.

here are the logs. (rename log.pdf in log.txt to see it)
log.pdf (3.2 MB)

If anyone could take a look at it and tell me why I can not arm my drone it would be nice!

thank you