Problem with new concept creation

After a clean openMRS installation and while adding some patients and some concepts and every thing was fine. Now when I try to add new concept I get an error message with no text in it, I noticed also that I am not able to add attachment to the pt visit the upload bar appears then nothing happens (that was ok).

here is my sever logs since the problem:

Sorry for so many questions, but this is my first successful openMRS implementation after so many trials. Thanks in advance

I noticed now that I can not save patient note.

Hi @oshouip, are you using a released version of the Ref App? How did you set up your server exactly?

I deployed platform 2.3 on my local server and then I installed reference app 2.10 addons And it was working fine at first

You need to add a caption then hit upload.