I have created a new page on my website: https://membership.gai-edu.eu/country-qualification/ and added jquery source file :
which is on 1034 line of code and after that my main navigation menu disappears completely for some reason. The menu is fully visible on other parts of the website. I need to keep that jquery file in order for some other page parts to work for me.
What I can do to keep that Jquery file there and make navigation visible again?