#Error! in ImportJSON formula in google sheets

I have been successfully using the following ImportJSON formula in google sheets:

=ImportJSON(csgoempire.com/api/v2/metadata/roulette/history?seed=1997, "/", "noInherit,noTruncate,noPrefixHeaders",94)

But it was until recently that, the same formula started to give below #ERROR! result. Could you please help? It has been working perfectly for almost 2 month:

Exception: Request failed for csgoempire.com returned code 403. Truncated server response: {"blocked":true,"country":"USA","ip":"107.178.193.127"}