CODE_ERROR

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

[Error Code: 1101] cadence runtime error Execution failed: error: underflow --> 6ef39d17c12952a39dde2858abd0eba167d3cc9d5fb0f724263a7769fdaf0a2c:16:8 | 16 | let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^