Error cesium

Hello.

Hello, why this error appears:
Error: WebGL warning: texImage2D: Alpha-premult and y-flip are deprecated for non-DOM-Element uploads.

[Cesium.js:495:1912](http://orienweb.alwaysdata.net/regatas/js/Cesium.js)

Regards
Javier

Are you using Firefox? I found this issue on Mozilla’s bug tracker: https://bugzilla.mozilla.org/show_bug.cgi?id=1400077

Can you share the code you have that triggers this?