Error running WebGL on any browser

When I try to Run my game on webGL, the game does not enter on the first scene, the current messages are prompted on Browser Console: - "run() called, but dependencies remain, so not running" - "Calling stub instead of signal()"

The game is running properly on WebPlayer, Android and Ios (64bits and 32bits) so I don´t know why the game is not running on WebGL on Firefox neither on Chrome or Safari.

The Player Settings values that I use are the next ones: -

It is very important to be able to run the game on WebGL since WebPlayer is not supported on Chrome any more.

Thanks.