Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a92524b636c86035d9278e17084693324b0bdf0968dfc7d34e64b5616d4f0e67:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^