I've done many trials and finally I can compile my game. I do not have any conclusion why I could not. Some posts are talking about changing browser .... The fact is that I changed a lot of things and I compile now, but defiitely not an issue with webstorage.
What I've just discovered is that my game only works if I compile with Canvas+, and not using webview , but this is another issue ! . I'll keep investingating this.