Good morning.
I bought this plugin a few days ago but I can’t get it to work.
I’ve looked at how it installs in the demo editor and I’ve looked for topics here on the forum.
Every time I put the video it returns me with these 5 errors and nothing else happens.
Hello @PauloEverton,
Thanks for reaching out to us.
First of all, according to the Background Videos Plugin supporting documentation, please make sure that you create a separate database table with a single field of type file (in our case it is called BackgroundVideo data type that contains video field type - *file. Also, please upload your background video in 3 file formats - .mp4, .webm, and .ogv, to be compatible with all browsers.
In case the issue still persists, please share screenshots or screencasts of your setup and the issue, this will allow us better understand what was going wrong and try to help you with the plugin configuration. For the screencast recording, I can suggest using the Loom tool. 
Looking forward to your reply.
Best,
Gulce