function getUserTx(address _addr) public view returns (uint[] calldata) {
    return  usersTx[_addr];
}

 mapping (address=>uint[]) public usersTx;

报错

TypeError: Return argument type struct Auction.Tx storage ref[] storage ref is not implicitly convertible to expected type (type of first return variable) struct Auction.Tx calldata[] calldata.

返回数组不是这样操作的吗？