{"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 (C:\\Program Files\\Unity Hub\\resources\\app.asar\\src\\services\\localIPC\\controllers\\window.js:104:30)\n at WindowController.show (C:\\Program Files\\Unity Hub\\resources\\app.asar\\src\\services\\localIPC\\controllers\\window.js:53:12)\n at processTicksAndRejections (internal/process/task_queues.js:86:5)","timestamp":"2019-12-09T14:36:24.176Z"}

Reproducible with: 2.2.0, 2.2.1

Notes:
- The error often appears in the logs when the Hub throws "Unity is already in the list. You cannot locate the same version"
- The error also often appears when users are saying that for one or another reason they are unable to open the projects

WORKAROUND:
use Command Prompt or Terminal to open Unity with command line argument -projectPath:
"<path to Unity.exe>" -projectPath "<path to the main project directory>"