Shopify error fix

I am trying to instal LitExtension Store Migration tool and i keep getting this error:

"
Oops, something went wrong.

What happened?
Oauth error invalid_request: The redirect_uri is missing
What can I do?
Press the back button on your browser.
Return to your admin dashboard.
Request ID: 54223b5c-5b1c-4c3a-8127-630d2f738cb9-1729257083 " 400 error

Please help i need this fixed ASAP.