在barnard上已经注册过的STC-FAI token pair，再次注册，钱包里面直接报错

[montecristo43420]

ALERT: Starmask: contract.dry_run_raw failed. Error: {"MoveAbort":{"location":{"Module":{"address":"0x4783d08fb16990bd35d83f3e23bf93b8","name":"TokenSwap"}},"abort_code":2006,"explain":{"category_code":214,"category_name":null,"reason_code":7,"reason_name":null}}}

应该在dapp里面检查，如果已经被注册，就给提示，不要再提交交易到钱包了