[NySWat]

Hey everyone so as of right now im still learning about pawn and so on but for some reason i cant understand these errors i keep getting! i am creating a RP quiz in the beginning but i keep getting this errors when i attempt to Compile..



error 021: symbol already defined: "MP_OPC"
error 021: symbol already defined: "SSCANF_OnPlayerDisconnect"
error 021: symbol already defined: "OnPlayerText"


Can anyone explain what do these means?