Game loading stuck at 25% after update popup

[R2138472149]

I got a popup in the game window telling me that an update was available. After clicking "Ok" on that popup the screen went blank. I tried to reload the game and it got stuck at 25%. Now the game keeps getting stuck at 25% during loading. I use Firefox browser. I have tried clearing cookies and cache to no avail. I tried changing the browser to Chrome and still it is stuck at 25%

[R2138472149]

The issue resolved by itself after persisting for about an hour