CODE_ERROR

There is an error in the cadence code of this transaction.

[Error Code: 1101] error caused by: 1 error occurred: * transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed: --> 7d71743a0e7a5b2018bed91de93e54e1d45672a01e3b4a692c8da058d013ba2d:17:8 | 17 | tryBI(tokenInVault: flowTokenVault) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: underflow --> 7d71743a0e7a5b2018bed91de93e54e1d45672a01e3b4a692c8da058d013ba2d:29:24 | 29 | let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^