Adb unauthorized when connecr to computer

Hello I need help, I’m using Mokee 10.0.0 ido -202010300502- nightly and trying to connect it with my laptop using adb, but it always show adb unauthorized and there is no popup that asked for permission. Can you help me? Thank you

1.The following measures are recommended: Press Ctrl+Del+Alt to open the task manager,
Find the process named adb and close it, restart the phone and replug the data cable,
Close other related programs
or
2.Turn on USB debugging-Connect to the computer-Settings-Connected devices-USB-File Transfer

Thankyou for your reply, I’m using linux mint 20.04, I’ve tried delete the pub.key but still not working