Chrome console extension.log

I am creating a chrome extension that reads the console log and finds where the ip appears after the "Connect to" line and gets the ip.

store = []; 
var oldf = console.log; 
console.log = function(){   
store.push(arguments);    
oldf.apply(console, arguments);
};

pos = 0 
server = ""

setTimeout(function(){
    for(i = 0; i < store.length; i++){
        if(store[i][0].indexOf("Connecting to") != -1){
             pos = i
        }
    }
    var goal = store[pos][0].split(" ")[self.length-1];
    server = goal
    console.log(server);
  }, 3000);

      

        
        
        
      

    

I tried this code with Tampermonkey and it works fine, but as a chrome extension it doesn't work. The override for the console.log function is working correctly, so it might be something about permissions with the chrome extension. I'm the first, so I don't know much. I am getting Uncaught TypeError: Can't read property '0' from undefined If you need something else just tell me