Warning "No valid data from Gyro 1" once Mavlink shell is started

Hello!
I am testing a Holybro S500 quadcopter by using Holybro pixhawk 6C autopilot flashed with PX4 firmware of Version 1.13.3.
Once I entered the Mavlink shell of QGC, I received the following warning “No valid data from Gyro 1”.
I could enter commands such as top, sensors status, etc and the Mavlink shell responded to these command.
After I closed the Mavlink shell, it was seemed that the autopilot was frozen, and the Attitude/Compass indicators in Fly view did not respond to any manual movement of the quadcopter. Only the above warning was given again and again.
Can someone help me?
Thank you in advance.

I wish maybe the following information is helpful.
nsh> free
total used free largest nused nfree
Umem: 953504 288224 665280 460224 1226 55
Prog: 2097184 1915264 181920 113344 59852 5685
%--------------------
nsh> ls
/:
bin/
dev/
etc/
fs/
obj/
proc/
nsh> cd dev/
nsh> ls
/dev:
console
console_buf
led0
mmcsd0
mtdblock0
mtdblock1
mtdblock2
mtdblock3
null
pipe0
pipe1
pwm_output0
pwm_output1
px4fmu
px4io
ttyS0
ttyS1
ttyS2
ttyS3
ttyS4
ttyS5
ttyS6
uavcan/
%--------------------
nsh> top

PID COMMAND CPU(ms) CPU(%) USED/STACK PRIO(BASE) STATE FD
0 Idle Task 1041617 91.624 240/ 512 0 ( 0) READY 3
1 hpwork 0 0.000 332/ 1264 249 (249) w:sig 3
2 lpwork 0 0.005 572/ 1616 50 ( 50) w:sig 3
3 init 0 0.000 2228/ 2928 100 (100) w:sem 3
4 wq:manager 0 0.000 420/ 1256 255 (255) w:sem 3
924 top 0 0.000 1964/ 4080 237 (237) RUN 3
79 wq:hp_default 1 0.840 1220/ 1904 237 (237) w:sem 3
94 dataman 0 0.000 828/ 1208 90 ( 90) w:sem 4
102 wq:lp_default 0 0.094 988/ 1920 205 (205) w:sem 3
109 wq:I2C1 0 0.309 880/ 2336 246 (246) w:sem 3
396 wq:SPI1 0 0.000 1792/ 2336 253 (253) w:sem 3
409 wq:I2C4 1 0.562 880/ 2336 243 (243) w:sem 3
568 wq:nav_and_controllers 1 0.617 1192/ 2240 242 (242) w:sem 3
570 wq:rate_ctrl 1 0.523 1392/ 3152 255 (255) w:sem 3
571 wq:INS0 0 0.102 4260/ 6000 241 (241) w:sem 3
581 wq:INS1 0 0.117 4260/ 6000 240 (240) w:sem 3
584 commander 0 0.368 1620/ 3224 140 (140) w:sig 5
913 mavlink_shell 0 0.000 1092/ 2024 100 (100) w:sem 3
726 gps 0 0.072 1204/ 1680 205 (205) w:sem 4
787 mavlink_if0 6 3.233 1932/ 2728 100 (100) READY 6
789 mavlink_rcv_if0 0 0.171 1740/ 4712 175 (175) w:sem 6
829 navigator 0 0.000 980/ 1920 105 (105) w:sem 6
882 logger 0 0.157 2548/ 3648 230 (230) w:sem 3
905 wq:uavcan 1 0.745 1700/ 3624 236 (236) w:sem 3
907 log_writer_file 0 0.000 372/ 1176 60 ( 60) w:sem 3
916 nsh 0 0.000 1228/ 2032 100 (100) w:sem 3

Processes: 26 total, 3 running, 23 sleeping
CPU usage: 7.92% tasks, 0.45% sched, 91.62% idle
DMA Memory: 5120 total, 0 used 0 peak
Uptime: 1141.432s total, 1041.617s idle
%--------------------
nsh> work_queue status

Work Queue: 10 threads RATE INTERVAL
|__ 1) wq:rate_ctrl
| |__ 1) mc_rate_control 6.0 Hz 167327 us
| |__ 2) px4io 52.7 Hz 18986 us
| __ 3) vehicle_angular_velocity 105.1 Hz 9518 us
|__ 2) wq:SPI1
| |__ 1) bmi055_accel 5.2 Hz 192110 us
| |__ 2) bmi055_gyro 5.2 Hz 191860 us
| __ 3) icm42688p 6.2 Hz 161640 us
|__ 3) wq:I2C1
| |__ 1) ist8310 46.8 Hz 21345 us
| __ 2) rgbled_ncp5623c 38.7 Hz 25840 us
|__ 4) wq:I2C4
| |__ 1) ist8310 46.3 Hz 21601 us
| __ 2) ms5611 92.6 Hz 10800 us
|__ 5) wq:nav_and_controllers
| |__ 1) ekf2_selector 101.1 Hz 9892 us
| |__ 2) flight_mode_manager 0.3 Hz 2846377 us
| |__ 3) land_detector 20.6 Hz 48644 us
| |__ 4) mc_att_control 1.4 Hz 729871 us
| |__ 5) mc_hover_thrust_estimator 0.7 Hz 1425659 us
| |__ 6) mc_pos_control 10.6 Hz 94075 us
| |__ 7) sensors 100.6 Hz 9942 us
| |__ 8) vehicle_acceleration 100.6 Hz 9942 us
| |__ 9) vehicle_air_data 69.4 Hz 14401 us
| |10) vehicle_gps_position 5.0 Hz 200092 us
| _11) vehicle_magnetometer 46.8 Hz 21350 us
|
6) wq:INS0
| |
_ 1) ekf2 11.6 Hz 85878 us
| |__ 2) ekf2 11.6 Hz 85877 us
| __ 3) vehicle_imu 167.3 Hz 5979 us
|__ 7) wq:INS1
| |__ 1) ekf2 11.5 Hz 87303 us
| |__ 2) ekf2 11.5 Hz 87300 us
| __ 3) vehicle_imu 198.1 Hz 5047 us
|__ 8) wq:hp_default
| |__ 1) battery_status 100.0 Hz 10000 us
| |__ 2) board_adc 100.0 Hz 10000 us (10000 us)
| |__ 3) gyro_fft 5.0 Hz 201135 us
| |__ 4) manual_control 5.1 Hz 197114 us
| |__ 5) mc_autotune_attitude_control 0.0 Hz 0 us
| |__ 6) pwm_out0 28.6 Hz 34935 us
| |__ 7) rc_update 43.5 Hz 22998 us
| __ 8) tone_alarm 0.0 Hz 52989468 us
|__ 9) wq:uavcan
| |__ 1) uavcan 333.3 Hz 3000 us (3000 us)
| |__ 2) uavcan-actuators-esc 10.0 Hz 99994 us (100000 us)
| __ 3) uavcan-actuators-servo 10.0 Hz 99995 us (100000 us)
__ 10) wq:lp_default
|__ 1) gyro_calibration 50.0 Hz 20000 us (20000 us)
|__ 2) load_mon 2.0 Hz 499994 us (500000 us)
|__ 3) mag_bias_estimator 50.0 Hz 20000 us (20000 us)
__ 4) send_event 30.0 Hz 33333 us (33333 us)