Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 423f90304d8e2099b838eb1579ee7cdabec13dba080e4619730d6ae32091c74f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^