Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 47d211794b805c24a982e7bd30f27d312a385cd3f3d9f93672f35c956e7ef093:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^