Symptom
If you find that when you try to upload a video and find that the upload wizard hangs at this stage.
It is possible that you are encountering an issue caused by the system clock being incorrect.
Note: This error can be confirmed by looking for the following HTTP 403 error in a HAR capture during the upload "The difference between the request time and the current time is too large".
Solution
To fix this issue, make sure that your system clock is correct.