Error 5 and error 20

Hello I Have problem with lightburn.

I used as normal today I burned.

I try again burn 2 hours later but i can’t

I have two errors

Error 5, and error 20

I spend 2 hours looking what’s happend i checked your forum and I found

Error 5 i checked i have automatically return button green and i still have error

Error 20 i checked i choose my device and I have grbl option as well.

I delated everything and i create connection again but still this two errors come out.

I hope you can hellp me with this problem

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