about yii2

Hello forum, I was developing a web application in yii2 and I want to test it,the web site was developed in windows, but when I want to put it on the server, that is in linux ,the index site load it blank, just once came out with my website and was using a virtual host but when I tried to access menus of it I came out blank, any ideas? I’ve tested on computers with windows and even servers with windows with no problems… There will be some compatibility issues? Please help me, I appreciate it. Sorry for my english

Probably the use of uppercase characters / lowercase path with / \

Compare tabem the PHP extensions between servers

In which part exactly should i change / by \?