Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bad93f21a3043337aa9b9bc8ce8764ae47310b0e3d6ecc8dd487397590449310:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^