Livereload fires "Connection ... unsuccessful" but comes after a minute

When I start the app with ionic cordova run android -lc a message box is shown “The connection to the server was unsuccessful ()” But after a minute, the app is loaded. (see in background)

When I close the message box, the app is closing. Maybe the connection with ionic is very slow.
Is there a variable to set the timeout for the alert? Or disable it completely?

I get the message on console:
ionic deviceready has not fired after 5 seconds channel not fired: onDOMcontentloaded