I'm not sure what happened, but some code I was testing in the playground caused a crash. Crash reoccurs every time I visit the page because of session logging (and it crashes as soon as it loads the page because it immediately tries to run the bad code).

Wasn't sure where to talk about this at (workaround was using Chrome's incognito mode, cookie deletion does not work)

I imagine that the demo somehow reloaded in the midst of me typing some code and kicked off an infinite loop somehow.