Sadly, the stuck tape for me was a symptom of a larger issue with the drive itself. But, we have an HP LTO4 autoloader displaying an odd error on the LCD
I tried everything via the hardware interface, but we knew a tape was stuck in there. So, I removed the drive unit and saw the tape.
Rather than just cutting into the mechanism, I found this video on youtube to at least try and extract the stuck LTO4 tape through the proper process.
I was able to extract the tape and found the post-it note jammed in the slot, but that wasn’t the ultimate issue that doomed the drive.
The drive mechanism that grabs and guides the cartridge broke and was not able to be easily repaired.
So, the drive was a loss, but hey, I was able to get the tape out. The video was absolutely key. Good luck to you.