Cannot open project with Hub. It says "Unity is already in list."

I was opening a project with Hub, when it says “Unity is already in list. You cannot locate the same version”.
I checked the logs, and the problem is:

{"moduleName":"LocalProject","level":"info","message":"[ 'openProject projectPath: /path/to/my/project, current editor:',\n  undefined ]","timestamp":"2019-12-03T10:26:25.143Z"}
{"moduleName":"RestEvent:Project","level":"info","message":"[ 'onProjectOpen data:',\n  { projectPath:\n     'path/to/my/project' } ]","timestamp":"2019-12-03T10:26:25.143Z"}
{"moduleName":"UnityIPCServer","level":"info","message":"[ 'client process has connected to Unity-hubIPCService!' ]","timestamp":"2019-12-03T10:26:26.207Z"}
{"moduleName":"Auth","level":"info","message":"[ 'Successfully logged in' ]","timestamp":"2019-12-03T10:26:26.607Z"}
{"level":"error","message":"Unhandled promise rejection, reason: The value of \"byteLength\" is out of range. It must be >= 1 and <= 6. Received 8\n\tstack RangeError [ERR_OUT_OF_RANGE]: The value of \"byteLength\" is out of range. It must be >= 1 and <= 6. Received 8\n    at boundsError (internal/buffer.js:58:9)\n    at Uint8Array.readUIntLE (internal/buffer.js:80:3)\n    at WindowController._sendMainWindowHandleData (D:\\MBI\\x64\\Unity Hub\\resources\\app.asar\\src\\services\\localIPC\\controllers\\window.js:104:30)\n    at WindowController.show (D:\\MBI\\x64\\Unity Hub\\resources\\app.asar\\src\\services\\localIPC\\controllers\\window.js:53:12)\n    at processTicksAndRejections (internal/process/task_queues.js:86:5)","timestamp":"2019-12-03T10:26:33.554Z"}
{"moduleName":"HubIPCService","level":"info","message":"[ 'socket has disconnected: [object Object] , false!' ]","timestamp":"2019-12-03T10:26:43.613Z"}
{"moduleName":"LaunchProcess","level":"info","message":"[ 'child process exited with code 0' ]","timestamp":"2019-12-03T10:26:43.670Z"}

How can I fix the “Unhandled promise rejection, reason: The value of "byteLength" is out of range. It must be >= 1 and <= 6.”?

I have a same problem.
Have you found the solution?

Any luck?

There are a few possible solutions here that look like they could prove helpful: [Solved] Unity Editor doesn't start "Unity is already in list. You cannot locate the same version"

Reinstalling your operating system is not an acceptable answer to such an inane problem.

Perhaps the dev. team overseeing Hub will have better luck on the next iteration.

Hi, Im with the same error. The solution of opening the Scene.unity does not work for me.
Incredible to see how many people is facing this error and the dev team does nothing in such important bug :frowning:

Hi again, if someone needs a fix, @TheWarper left a link with Hub v2.0.4

For me its working: Hub can't open Projects! "unity is already in list. you cannot locate the same version"

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