jetpack just crashed my site

Hi,
After upgrading my wordpress 4.5 website https://www.lesgoodnews.fr/ to Jetpack 4.0 with Hueman theme.
I have same issue “error 500” and blank page
I downgrade to Jetpack version 3.9.6
https://downloads.www.ads-software.com/plugin/jetpack.3.9.6.zip
It fix the issue
I will wait for the fix in a new update of 4.X version and an answer from the plugin authors on these issue.
A possible a non-official workaround is to disable/enable Publicize jetpack feature on your website.

Have a look at https://www.ads-software.com/support/topic/jetpack-400-500-error-temporary-fix for a temporary fix until a patch is pushed ??

We’re also tracking the issue here, and will release an update as soon as possible. Until then, Marius’s fix should help, or you can try to remove the plugin entirely (deactivate AND delete), and then install it again from scratch.

Let me know how it goes!

thanks, i downgraded until a fix will emerge.

Jetpack 4.0.2 is now available, and includes a fix for this issue.

Sorry again for all the trouble!