I have everything working normally in my sandbox (render as pdf on a vf page), but when I copied everything and paste inside my prod, I have a pdf that look likes this when I render it as pdf
If I don't render it as pdf, I have something weird at the beginning of the page :
If instead of calling the page from a method with getcontentaspdf, I go directly to the page and use renderas pdf, then it is working.
THe problem comes from getcontentaspdf. I am system admin on the system. Is there any others rights I need to set up ?