"Some of the selected content couldn't be applied" When trying to add an addon to a realm.
Whenever I try to add a mod to my Minecraft realm, I get a message saying that some of the selected content couldn't be applied. This glitch has been in the game for months and still hasn't be fixed. It is especially annoying for those like me who bought the realm to play a modded world. But now I'm stuck paying 10$ a month for a useless realm. I spent hours trying to find a way around it. Every now and then I get lucky and it works. But only hours after I initially put the addon. This game actually makes me so mad. They always are working to fix the most random, rare bugs but never focus on the largest bugs in the game.
If anyone knows a workaround, please tell me!
Created Issue:
"Some of the selected content couldn't be applied" When trying to add an addon to a realm.
Whenever I try to add a mod to my Minecraft realm, I get a message saying that some of the selected content couldn't be applied. This glitch has been in the game for months and still hasn't be fixed. It is especially annoying for those like me who bought the realm to play a modded world. But now I'm stuck paying 10$ a month for a useless realm. I spent hours trying to find a way around it. Every now and then I get lucky and it works. But only hours after I initially put the addon. This game actually makes me so mad. They always are working to fix the most random, rare bugs but never focus on the largest bugs in the game.
If anyone knows a workaround, please tell me!

Can you determine which specific add-on(s) are having this issue?
You might have to try removing a few to narrow it down.
This report has been temporarily resolved as Awaiting Response. It will automatically reopen when you comment with new information. Please provide all requested information. Reports that do not contain enough information may be closed as Incomplete.
Many players find this Bug Report Creation Form useful for filling in all helpful information.
The only active pack is this custom pack I made using Crafty Craft.
Some other user on another post said it had something to do with the realm's backup thing.
Also, when I remove packs I get the same error.