Unexpected error of Rekordbox DJ and Rekordbox Video when playing video clips ( Pioneer DDJ RZX )

Good afternoon.
I write to you from Ukraine, and translate it through an online translator, so there may not be clarity in the translation.
Please understand me.

I bought a new controller Pioneer DDJ RZX and there was a problem with playing video clips.

Before buying RZX I used SZ (Serato Video) and I did not have such a problem.
I buy clips on the site https://www.smashvision.net.

As soon as I run the video on Rekordbox the program itself closes with an error.
It may close in 5-10 minutes, and maybe immediately, it is not possible to understand the reason.

So I decided to write to you that you helped me figure out what was wrong.

Rekordbox and Rekordbox Video are official with your license.

What's the problem that the program itself turns off with an error I can not understand.

Here are a few videos of how this happens.
https://www.youtube.com/watch?v=r8GaythHzgQ&feature=youtu.be

https://www.youtube.com/watch?v=X4m42jEzVPg&feature=youtu.be

https://www.youtube.com/watch?v=ysGB5IawqLo&feature=youtu.be

https://www.youtube.com/watch?v=Qc4G83MK9Yk&feature=youtu.be

I tried on two computers.

MacBook Pro 15 "2015 i7 2.2 ghz 16gb RAM 256gb SSD

and

Apple iMac 27 "Desktop - 3.4GHz Intel Core i7 Quad-Core, 1TB Fusion Drive, 32GB 1600MHz DDR3 SDRAM
On two computers, the program itself displayed an error and turned it off.

I ask you to help me.
Thank you.