Error: Invalid sequence for "antibody"

[BobW4ng]

Error: Invalid sequence for "Antibody1": "QVQLVQSGGGVVQPGRSLRLSCKASGYTETRYTMHWVRQAPGKGLEWIGYINPSRGYTNYNOKVKDRFTISTDKSKSTAFLQMDSLRPEDTAVYYCARYYDDHYCSSASCFCLDYWGQGTPVTVSS"
I dont know how to deal with this issue , It would be much appreciated if this solves the problem,thanks guys!