TWRP Backup Failed XT1053; Can't delete folder

Just recently I had to do a full wipe of my phone and reflash the custom rom i was running because of some problems I was having. As soon as i flashed the rom again i got this error:
E:Unable to stat '/data/data/Swiftkey/Files/language_models/user/learned.json
but the flash was succesful so I didn't think too much of it
After I booted up my phone i noticed that i couldn't install Super Swiftkey or the regualr Swiftkey app. I then tried going to ES File Explorer, I searched for the folder and i tried to delete it, but it wouldn't let me i got the message: File not deleted error code 39 so I tried changing the name and path of the folder , I changed the folder's name to "Cristian" and pasted it on the downloads folder where i was able to delete the folder and then I was able to install Super Swiftkey again.
The problem is I just tried doing a nandroid backup with two different TWRP versions and i get the same error:
Updating partition details...
E:Unable to stat '/data/data/Cristian/Files/language_models/user/learned.json
right after that the backup fails. I get the same message for wiping cache or whenever i try to do anything on TWRP. Any ideas on how i can fix this? Turns out the original path from the folder is still there and there's no way to delete it with any app