Updated to 4.18 and Receiving Niagara Script Error Messages

After updating from 4.17.2 to 4.18.1 and opening a copy of a project, I received a few error messages:

Can’t find file for asset. /Script/Niagara
Failed to load /Script/Niagara.NiagaraFunctionLibrary Referenced by K2Node_CallFunction_28700
Failed to load /Script/Niagara.Default__NiagaraFunctionLibrary Referenced by K2Node_CallFunction_28700
Failed to load /Script/Niagara.NiagaraEffect Referenced by K2Node_CallFunction_28700
Failed to load /Script/Niagara.NiagaraComponent Referenced by K2Node_CallFunction_28700

Anyone know how to fix these?
Thanks in advance!

I’m having the same issue, I deleted all my Niagra components and it hasn’t managed to solve it. Did you manage to solve it or?