I didn’t make that a feature, sorry but if you change the file extension to .zip instead of .mcpack and in there just look for any files to do with item frames and delete them. After that, delete the original one through the minecraft app, close it, rename the .zip back to .mcpack, launch it and it should work without the invisible item frames. If not, reply and I will make one without invisible item frames. Thanks for downloading the pack.

Thanks!