Linkedin Error with version 1.7.2

Hello,
I have an error when sending to Linkedin.
At first, SMAP was working and sending to FaceBook and Linkedin (Twitter not used)

Then, with any reason or settings modification, SMAP stopped working with Linkedin.
I had this message in SMAP logs for Linkedin :
new : Can not parse JSON share document. Request body: Error: null

So I created another Linkedin App, but without success for SMAP : ok to reauthorize, but the same error occurs when sending to Linkedin :
new : Can not parse JSON share document. Request body: Error: null

But FaceBook is working.

What can i do from here ? What sort of information do you need ?

Thanks, have a nice day ??