Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> c16fb1e268583b987f8e7feccf1c266ece51974b4b49c2faef1d78096b7a0f50:19:11
   |
19 |         if tryBI(tokenInVault: flowTokenVault) {
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: underflow
  --> c16fb1e268583b987f8e7feccf1c266ece51974b4b49c2faef1d78096b7a0f50:35:24
   |
35 |     let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^