Model not found and CSS Error

[PrinceVinceTech]

Hi there,
I kept having this issue saying Model not found even if I am just visiting the home page
https://portal.kreativs.net

And checking the logs I keep getting the errors above, I switched my theme to the default theme thinking it could be because of bootstrap.

[PrinceVinceTech]

Thank you! Any help is much appreciated. Cheers!