Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b27d90678a875a988035283cbfe51daafb2ba69c2f5b3d2771400c26dbec7f64:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^