I'm trying to create a custom module but it is not visible in install modules

Hi everyone,

I’m trying to create a new custom module. i have created and placed the json file in

mymodule.json file contains the following information

“title”: “My Module”,
“author”: “Saqib Ali”,
“description”: “A module for testing”,
“name”: “mymodule”,
“class”: “xibo-docker-1.8.11\Custom\MyModule\MyModule”

but when i goto xibo admin panel and try to install the module its not visible in the list.