Give useful information when box crashes or a request is otherwise terminated

src/js/client.js

@@ -189,6 +189,13 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
             message = error;
         }
 
+        // give more info in case the error was a request which failed with empty response body,
+        // this happens mostly if the box crashes
+        if (message === 'Empty message or object') {
+            message = 'Got empty response. Click to check the server logs.'
+            action = action || '/logs.html?id=box';
+        }
+
         this.notify('Cloudron Error', message, true, 'error', action);
     };