Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 52d9194110b21d0241444147820b951d0d1b60537689cf14a78869b643ef6092:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^