Hello. I get an error each time I try to eighter edit an already existing portfolio item, or creating a new one. It doesn’t matter if I only preview it or if I publish and then open it on the page. It appears in the middle of the page loading and crashes all of the open site pages.

It says:

Page crashed
Unfortunately, something caused this page to quit. It might have been an extensions conflict or some other reason.
Try reloading the page, or navigate to another page and continue.

When I reload the same thing happens within a second. Here is a link to the portfolio page:
http://simplydikka.com/#/portfolio