Rotativa is giving my an error on the server but works well locally.
Here is the trace :
[Exception]
Rotativa.Core.WkhtmltopdfDriver.Convert(DriverOptions options, String html) +766
Rotativa.MVC.ViewAsPdf.CallTheDriver(ControllerContext context) +1287
Rotativa.MVC.AsPdfResultBase.BuildPdf(ControllerContext context) +192
....GenererPdfImpression(String idFeuilleDeBord) in D:\...\FeuilleDeBordController.cs:239
Visual C++ distribuable had been removed from the server. I just reinstalled it and it worked.