Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 314b989282769c11acd7d483f716df6b2dd4106eabd3019aeb3d099721a15ad6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^