You have a display problem, an error message like "an error has occured" appears and you are asked to refresh the page ?
Try to empty the cache of your internet browser :
- For Windows, use the keyboard combination Shift + F5 or Ctrl + F5.
- For Linux, use the combination Shift + Ctrl + R
- For Mac, use the combinaison ⌘ + Maj + R. or click on the "Refresh" button while holding down the Shift Key .
You have information here :
https://www.wikihow.com/Refresh-a-Page
If the problem persist, tell us the internet browser you are using.