Jsonapi breaks MineOs WebUI connections

[NoWing31]

Hello,
First, I 'm French , I apologize for my expression errors.
I have a problem with the jsonapi plugin.
When the plugin is installed the Panel MineOs WebUI can not query anymore the minecraft server.
MineOS uses the official server ping technique.
Jsonapi's queries are working fine.
Jsonapi port, query port, rcon port and server port are différents.
Thanks for the help

[Kworz]

no logs or anything else ?

[NoWing31]

nothing in the Jsonapi log nor on MineOs WebUI's one
the only thing is that if I remove jsonapi plugin, mineos webui works fine ... (but our CMS no more).
I wonder if jsonapi plugin does not overload a bukkit method used during mineos webui interrogations... but I do not see how to highlight