Server crashes when an upload is cancelled

[naumf]

Cancelling an upload in progress (tested with uppy as a client), throws the following uncaught exception:

ENOENT: no such file or directory, open '/tmp/Ln3r7sM8TZ-0'
    err: {
      "type": "Error",
      "message": "ENOENT: no such file or directory, open '/tmp/Ln3r7sM8TZ-0'",
      "stack":
          Error: ENOENT: no such file or directory, open '/tmp/Ln3r7sM8TZ-0'
      "errno": -2,
      "code": "ENOENT",
      "syscall": "open",
      "path": "/tmp/Ln3r7sM8TZ-0"
    }

Package versions:

"@tus/s3-store": "1.0.0-beta.4",
"@tus/server": "1.0.0-beta.5"

I'm working on a fix, will send a PR soon.

[Murderlon]

This seems identical to what was fixed here #410 🤔. Happy to take PRs for this.

[naumf]

This seems identical to what was fixed here #410 thinking. Happy to take PRs for this.

Indeed, but it didn't resolve the issue that I had, so I created a PR.