Disappearing Maps

New to Roll20. I've been prepping for a new campaign this past week. I've create one game and within that I've had 10+ different maps for encounters and such. I logged in tonight to keep preparing and all my images on the map layer and token layer have disappeared. Not a single page I worked on is showing anything but the blank white grid page. No map layer, no tokens, nothing. What happened? Is all my work gone?

Things to check:

1) you have the right game (almost certainly, but...)

2) Did you delete a lot of uploaded graphics fro your art library?

3) Were you working with multiple game open concurrently? This can lead Roll20 to be confused about which game is being worked on.

If none of those are the issue, best bet is to file a Help Center Request and explain the issue. A dev might be able to help.