How do I open this? / Comment puis-je ouvrir ceci ?

[ArduinoFan0]

It looks like french is your first language, don't worry, I google translated it for you. But how the heck do I even open this in my browser? / Il semble que le français soit votre langue maternelle, ne vous inquiétez pas, je l'ai traduit sur Google pour vous. Mais comment diable puis-je ouvrir cela dans mon navigateur ?

[chtibizoux]

Download the code here unzip it, then go to the client folder and open index.html.
The project probably didn't work well because I haven't worked on it for a long time and I didn't finish it.