These issues are usually caused by a temporary traffic overload on the chain and/or the RPC you currently use. If the issue persists you can change to a different RPC.
BNB Chain alternative RPC list:
https://bsc-dataseed2.binance.org/arrow-up-right https://bsc-dataseed3.binance.org/arrow-up-right https://bsc-dataseed4.binance.org/arrow-up-right https://binance.llamarpc.comarrow-up-right https://rpc.ankr.com/bscarrow-up-right
More BNB Chain RPCs: https://chainlist.org/chain/56arrow-up-right
