Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e5629b1f1fed0182017696f9fc3ba439baf7a86807cf0c199624f4240b79f1f6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^