Updating Resource Pack to 1.21.4 - Invalid Path?

Hello! 
I am trying to update a resource pack that we used on our SMP before the update to 1.21.4. Now when it loads, I get Resource Reload Failed when I install it on a single player instance to test. 
In the log file I see:
[08:54:01] [Worker-Main-60/ERROR]: Invalid path minecraft:: Invalid path '' [08:54:01] [Worker-Main-74/INFO]: Found unifont_all_no_pua-16.0.01.hex, loading [08:54:01] [Worker-Main-54/INFO]: Found unifont_jp_patch-16.0.01.hex, loading [08:54:01] [Worker-Main-45/WARN]: Missing block model: 'minecraft:block/cube_bottom_all' [08:54:01] [Worker-Main-45/WARN]: Missing texture references in model minecraft:carved_pumpkin#inventory:     #missing     particle
I used this video for reference https://www.youtube.com/watch?v=K39U55l4-O0
and used this site https://codepen.io/ZenithKnight/full/MWNPvaY to make the new file needed. 
I have tried taking it down to one model, no valid models. I am just lost as to where to look. 
I did refactor the files to all use snake case (rather than camel case AKA capitals). 
Can anyone make suggestions as to where to look to help resolve this? I'll attach the file in the reply. 
Thank you!