Machinon Update to 1.18.7 does not work

[Dbo78910]

Hello,
I use Machin theme with Domoticz. I have 1.18.5 version.
When i launched Domoticz in Firefox, Machinon said "Machinon version 1.18.6 est disponible" ( I am french ).
I tried to install this version, but i doesn't work. I tried restart domoticz, delete caches , delete the machinon folder, and reinstall it, then re-delete caches, and stop and restart Domoticz : it doesn't work.
With the version "1.18.7", it is the same : nothing works ......
What could i do ?
Thanks in advance !