Add invitees to meeting error

I have install a fresh 7.5.1 SuiteCRM version with demo data. The enviroment is:

  • Debian 8,
  • database engine mariadb 10.0,
  • PHP 5.6.17-0+deb8u1.

When I try to add invitees to the meeting by the “Search” button there is no response from the system side (despite the fact that there are data demo). When I run the browser inspector there appears the “Uncaught SyntaxError” like on the screenshots.

How to resolve it?

I´ve got the same problem.
New fresh installation.
I´thankful for every help!