OnePlus 8 Pro stuck on /e/OS start screen

What Oneplus Android version were you running before this … were you attempting to install /e/OS Android 11, R or Android 12 S ?

Whichever, the install page https://doc.e.foundation/devices/instantnoodlep/install tells you to

  1. Download the following files from the directory named with the latest date here.

… but all the files there are from LineageOS 20 / Android 13, T. I do not have the device, but mixing Android versions seems just wrong.

I wrote a similar reply to this post: OnePlus 7T 'No Touch Display' after install

Edit, supposing LineageOS 20 / Android 13, T is not a problem for this device, did you, or might you, try the required “extra” .img files from a folder which at least does not have a date in advance of the build date of you /e/OS ROM ?