Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> 23ab8fb1ba0498b2e80e0b5422e65f055f30deaef2b429df90b946088292bdb1:22:11
   |
22 |         if tryBM(tokenInVault: flowTokenVault) {
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: underflow
  --> 23ab8fb1ba0498b2e80e0b5422e65f055f30deaef2b429df90b946088292bdb1:92:24
   |
92 |     let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^