Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 51012bab1d4c166a0f7d1873fef53f1d0e3329242010a57bfe11bd09e577918f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^