BankMellat Configuration in .env
copy this code in env file

BANK_MELLAT_WSDL=https://pgws.bpm.bankmellat.ir/pgwchannel/services/pgw?wsdl  

BANK_MELLAT_OPERATION_SERVER=https://bpm.shaparak.ir/pgwchannel/startpay.mellat  

BANK_MELLAT_USERNAME=putUsernameHere

BANK_MELLAT_USER_PASSWORD=putPasswordHere  

BANK_MELLAT_CALL_BACK_URL=putCallBackURLHere

BANK_MELLAT_TERMINAL_ID=putTerminalIDHere