[xwiki-devs] tag <img problem

Hi all, I have some problems trying to exporta as pdf a page. In the source code there is an image

<img src="/xwiki/bin/download/Discussione/MasterPlan/Masterplan.png" alt=" Masterplan.png" title="Masterplan.png"/>

but in the pdf I see also this line

8080xwiki/H4RLVAa1/Discussione.MasterPlan.Masterplan.png" alt=" Masterplan.png" title="Masterplan.png"/>

and in the console these lines appears line 29 column 1 - Warning: <img> attribute with missing trailing quote mark

line 29 column 1 - Warning: <img> escaping malformed URI reference line 29 column 1 - Warning: <img> lacks "alt" attribute

Can someone help me?? Thanks Raffo