in the config.js modules:[] list

each looks like

{  
     module:"modulename",
     position: "whatever position",
     config: {
      .... module specific config options,
      ..... 
    }
}   ,   // comma means more coming (another module entry) , ok to have extra commas, not ok to not have enough

read the topics in my signature below, helpful content from users before me…

oh, and MagicMirror is case sensitive (everywhere)
module is not the same as Module

see
https://docs.magicmirror.builders/modules/configuration.html#module-configuration

OR didn’t specify a module: entry

{
    module: xxxx,
    position:
    config: { 
     ..
    ...
    }
}