"nosub upload" doesn't actually upload the HIT to sandbox

[gao-g]

When I run "nosub upload", the output is below:

      Running on sandbox
      You've already uploaded this HIT to sandbox

But when adding assignments afterwards, an error shows that the HIT does not exist:

/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/protocol/json.js:52
  resp.error = util.error(new Error(), error);
                          ^

Error [RequestError]: Hit 311HQEI8RSPHPKL05J2BY6UEZVE7Z0 does not exist. (1657421793250 s)
    at Request.extractError (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/protocol/json.js:52:27)
    at Request.callListeners (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at Request.emit (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/request.js:686:14)
    at Request.transition (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/request.js:688:12)
    at Request.callListeners (/opt/homebrew/lib/node_modules/nosub/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
  code: 'RequestError',
  time: 2022-07-10T02:56:33.273Z,
  requestId: 'fec7eb04-96e0-4083-b1e9-9c3a58a047bc',
  statusCode: 400,
  retryable: false,
  retryDelay: 58.899219940386516
}

I tried many times to re-install node.js and nosub, but this error still shows up. Any thought on how to fix this?