onload start() in cocos creator

Onload and start() functions are calling two times in start of project
i don’t know what is the problem causing can anyone tell me what am doing mistake

Is this a new project? Have you used the getting started guide: https://docs.cocos2d-x.org/creator/manual/en/getting-started/

Also, How would someone help you solve your problem? Just saying something is happening doesn’t show it. Post any code you think is important and also pictures help visualize what is happening. Tell us what you have done. The more info the more likely someone can help.