Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9873bf1fc426def10aa536b8defcf061456c27ea809d4ae287b6901e38742b5e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^