Cant get into game after putting something on flea market

Everytime i load into game it just says (error converting value {null} to type 'System.int64'. Path 'ragfair.salesSum', line 1, position 286473.)

this happened before and i just wiped my account and it fixed it. The cause is when i put something up on the flea and it glitches out and wont let me back in, is this some common problem i can fix within the files? Thanks.

Nevermind, found another thread that had same issue. my problem is solved