ehh i never adviced deleateing cache in thisthread i linked to an old thread on technicall issues about the exact same error
Continuing the discussion from HS:NGRESULT DB ERROR:303:0 Error "Playful Sprites":
this is from the old thread thats why i said you should post about it on techniall issues too
all we know from it is an account related bug and they needed a hotfix to solve it since it happened before maybe itll take less time to fix it