Problem about Zoho extension "Channel Integration"

Hi, I create a new fresh zet project by

zet init

and after that I've just open Resources.json

and put something like

   {
  
   "channel":{
  
   "channelLogoPath" : 
   "/app/img/logo.png",
  
   "acceptAttachments" : 
   false,
  
   "updateRecords" : 
   true,
  
   "contentTypes" : [
   "text/plain",
   "text/html"],
  
   "redirectUrl" : 
   "https:/xxxxxxx",
   
   "includeQuotedMessage": 
   false,
  
   "sync": {
  
   "push": 
   "http://xxxxxxxxxxx",
   
   "pull": 
   "http://xxxxxxxxxxx"
   
    }
  
    }
  
   }

after that, I tried

zet validate

and then I got this error

PluginManifest file validation :-

==> The property "channelLogoPath" is missing in 'resources.json'.

Please help