USERGRID 'Unable to read cached value'

Hi Apigee community,

I'm playing with Usergrid to compare to other BAAS solutions for a new project (we were using Baasbox before).

I'm currently facing an issue that i can't solve while trying to GET/POST data.

{ error: 'runtime',
timestamp: 1510598339462,
duration: 0,
error_description: 'Unable to read cached value',
exception: 'java.lang.RuntimeException' }

Few minutes before, i was able to get data from my usergrid instance but now no get/post are working.

I'm using uergrid on docker and my client is in NodeJS.

Something really strange : i have no issue using usergrid portal.

Thanks in advance for your help.

Regards.