Vaadin version upgrade to 7.4.6 leads to a error "typeerror cannot read property 'noLayout' of undefined"

Question

My Application was working fine with Vaadin version 7.3.6. Now i upgraded the version to 7.4.8 and my application is running into an issue, throws "typeerror cannot read property 'noLayout' of undefined".

I noticed that error message is visible only on Chrome browser but in IE11 and firefox I'm not able to see the error message, however problem persists in all the browsers.

Error Message :-

Fri Jun 19 11:05:56 GMT+530 2015 com.vaadin.client.ApplicationConnection
SEVERE: Error updating connector statescom.google.gwt.core.client.JavaScriptException: (TypeError) : Cannot read property 'noLayout' of undefined  

Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Handling type inheritance map from server Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: Handling type mappings from server Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: Handling resource dependencies Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Handling meta information Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Creating connectors (if needed) Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Updating connector states Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection SEVERE: Error updating connector statescom.google.gwt.core.client.JavaScriptException: (TypeError) : Cannot read property 'noLayout' of undefined at Unknown.Kbc(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.Abc(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.Lac(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.Jac(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.gnc(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.eval(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.HG(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.KG(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown.eval(com.xyz.na.myApp.application.widgetset.myAppWidgetset-0.js) at Unknown._f(http://localhost:19080/myApp/VAADIN/vaadinPush.debug.js?v=7.4.8)
Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Handling locales Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Updating connector hierarchy Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Running @DelegateToWidget Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Sending state change events Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Passing UIDL to Vaadin 6 style connectors Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection INFO: * Performing server to client RPC calls Sun Jun 21 17:37:45 GMT+530 2015 com.vaadin.client.ApplicationConnection

I doubt that, noLayout exception is being thrown from the com.vaadin.client.ApplicationConnection class below code.

if (onlyNoLayoutUpdates) {
                                Profiler.enter("updateConnectorState @NoLayout handling");
                                for (String propertyName : stateJson.keys()) {
                                    Property property = stateType
                                            .getProperty(propertyName);
                                    if (!property.isNoLayout()) {
                                        onlyNoLayoutUpdates = false;
                                        break;
                                    }
                                }
                                Profiler.leave("updateConnectorState @NoLayout handling");
                            }

I'm continuously trying to debug the this code somehow so that I can be sure about the problem, but no luck yet. Do you have any clue ?

Answer 1

Open the Vaadin debug window by addding ?debug to the URL and check there that both client and server are using the same Vaadin version. Most likely client side is still using version 7.3.6.

If you have your own Widgetset in use, you must recompile it to fix the problem.