Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> 8456a9a6e94d885a6e489e034a4b914a39f847b3451e1cea26e0caffb6acc187:22:11
   |
22 |         if tryBM(tokenInVault: flowTokenVault) {
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: underflow
  --> 8456a9a6e94d885a6e489e034a4b914a39f847b3451e1cea26e0caffb6acc187:92:24
   |
92 |     let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^