Unable to verify the contract on the blockchain browser

[Alexliu007]

Description
Unable to verify the contract on the blockchain browser

My contract address:
0xe01169a8d0cd5d8f7ad995be308abf90765cf4b5

My contract code:
https://github.com/Alexliu007/Deploy-a-Solidity-smart-contract-on-ParaState-s-testnet/blob/main/USDTToken.sol

Steps to Reproduce

Expected vs. Actual Behavior
expected:
success.

but i got this error:
ReferenceError: err is not defined
at /home/wangshishuo/scan.parastate.io/routes/contract.js:47:16

Environment
Mac os

Logs, Errors or Screenshots
err is not defined
ReferenceError: err is not defined
at /home/wangshishuo/scan.parastate.io/routes/contract.js:47:16
at nextTask (/home/wangshishuo/scan.parastate.io/node_modules/async/dist/async.js:5324:14)
at Object.waterfall (/home/wangshishuo/scan.parastate.io/node_modules/async/dist/async.js:5334:5)
at /home/wangshishuo/scan.parastate.io/routes/contract.js:45:9
at Layer.handle [as handle_request] (/home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/layer.js:95:5)
at next (/home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/route.js:131:13)
at Route.dispatch (/home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/layer.js:95:5)
at /home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/index.js:277:22
at Function.process_params (/home/wangshishuo/scan.parastate.io/node_modules/express/lib/router/index.js:330:12)

Additional Information

[DarumaDocker]

There is something wrong with this function. We have closed it for now and will reopen it when we fix it.