Upload media error

Hello everyone

I am facing the issues in layout design,The given error comes,when i upload the image or pdf,or ppt…etc “SYNTAXERROR:UNEXPECTED TOKEN<IN JSON AT POSITION 0” in version 2.0.3

There is no proper solution on the web please let me the solution

xibo version 2.0.3

Thank you
Regards
Arunkumar P
arunsmart303@gmail.com