Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1b1966d776fab8ccd97672107d59e28bffc41717676d38f9fc38658e071c4643:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^