Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7123a0d797698580690acaedd6bba3c0b77219614e93846fda8b91fb275f01a0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^