Item pdf from a locally server

Hello,

I just installed Omeka-s in local on my computer (with Wamp) and now I would like to make tests of a pdf edition. However I apparently can’t right now record my pdf file from omeka-s interface for the following message : " Omeka S encountered an error". Could anyone tell me if I need rather to record my pdf file directly from wamp64 > www > omeka-s > files > original or to record a plugin that will allow me to read pdf ?

Thank you in advance,

Delphine