[SOLVED] Text not being displayed on List Element Box

A few hours ago, when I click on LInk Activity, then click on the magnifying glass, the List Element Box shows there are activities I can select from, however all the content is displayed with - - -

It does not show any of the text information.

I have attached an image so it can show you what I mean.

I have not done any changes.

How do I check for errors in browser console?

I have done everything on the link you provided. I even logged out and closed the actual browser that I use, which is Windows Google Chrome. The problem still occurs.

I had a look at any errors and I found the following ...

1) Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check xhr.spec.whatwg.org/.
dojo.js:15
2) 'KeyboardEvent.keyLocation' is deprecated. Please use 'KeyboardEvent.location' instead.
dojo.js:15

3) Uncaught ReferenceError: paramCurrencyPosition is not defined
projeqtorFormatter.js:228