Why doesn't the portfolio filter work?

Question

WordPress

Site - ug.ge/?page_id=842
For some reason, when you click on the filter, nothing happens. And at the same time, all portfolio items are shown at once.
Here are the filter categories

Answer 1

Hello!
The filter does not work for the reason that there is an error in the script. Here is what is seen in the console when clicking on any of the tabs
https://screenshots.firefox.com/dYIh5maMYJ0sd3YJ/null
Information on this error: https://stackoverflow.com/questions/19159395/jquer...