Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 10f18449d1884c004746a92e79d470e45d5fea115bbb65da3f83516bb8c14479:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^