Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d82add5bda7c7e45f8f03beb856886f4c23100bcf342bbe93bc7c20a6033068d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^