Hi,

Steps to Reproduce:

Go to https://tools.wmflabs.org/video2commons/

Copy past the url : https://www.youtube.com/watch?v=5laV_fLSX4E&list=PLem2YGGkt1CuprI306k0XsAKvTAPmto-R

See : Error: An exception occurred: DownloadError: ERROR: 5laV_fLSX4E: YouTube said: Unable to extract video data

Actual Results:

After these step, the web site was inaccessible before to be nonfunctional still at this moment.

Expected Results:

Explanation about what's happen and information about possibility to import video or not.
Help for completing the project T236704