Are you trying to open a project with the xml extension in BAS? Probably your project is damaged, you did not edit it manually using text editors? Try to restore it from backups located here:
C:\Users\User\AppData\Roaming\BrowserAutomationStudio\projectbackups
@clarabellerising Already took these actions but didn't help. I've ended up reinstalling Windows. Now everything works. Hopefully won't have this problem again
Try printing ( with log) the command you are trying to execute, run it in a seperate command line to see if it's working properly.
since it's related to input I am suspecting the problem is with the youtube url you are providing
Are you using any proxies or fingerprints? Have you tried
reloading the page or using different proxy/fingerprint?
Have you tried loading in regular browsers - chrome/ffox etc?
Can you send test script that reproduces that error or just
post exact web link/address?