Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 26d1084c086cf0e4979f8c9149fa06b2d56bda23f2a36b7b870254a6ee1f779d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^