How can i force WAF log file to be written in english ?

I have been trying to create a new project since yesterday and faced multiple WAF errors. I was able to fix multiple of them by looking on internet but now I am facing a new one and the fact that my log file is written in french do not help me at all to find equivalent problem on internet. I guess lumberyard is using the locale of my OS, but how can i have log in english instead ?