Custom maps page broken?

[reject]

Everytime I click on "Custom Maps" page, it loads page for about 2 seconds then this appears: http://prntscr.com/cfh3pl.

Clicking "back" button to return to custom maps page will redirect me to the page again, making it impossible for me to visit custom maps page.

[Protonoid]

Seems like you went into some javascript. Maybe due to java script was turned off.
Try using a different browser and turning js back on. However, You can visit other pages that means JS is working pretty normal over there, you should better check the toolbar as well somewhere near address bar if it turned of for that specific page.

[MI6 AGENT 007]

I don't think it's broken. Don't worry it happens to most people.