If you run into a WebView error, the problem could be with your app. Before giving up, try fixing the WebView error using developer tools. Here’s how: Open Developer Tools from Chrome’s Inspector by right-clicking on the tab and selecting “Inspect”. In the top right corner of the window, you will see an icon that looks like three horizontal lines. If you don’t see it already, select “Enable DevTools for Chrome” so it appears next to each other. The desktop version of Chrome is not supported at this time.
Inspect the WebView element
The WebView is the element you’ll want to inspect in developer tools. There are actually a few different WebView elements you’ll want to inspect, but for this article, we’ll be inspecting the HTML5 one. You can do this by selecting “Inspect Element” in the developer tools menu.
Check network availability
First, try checking the network availability to see if it’s the problem. Open the Network tab in the developer tools and check to see if the program is trying to make a connection. If it is, you may have a connectivity issue. Try unplugging your network cable or restarting your router. If it’s not, the error could be caused by a proxy configuration.
Define a baseline
Before looking at proxies, let’s make a baseline and see if that helps us find the issue. In the Network tab of your developer tools, select the “Baseline” option at the bottom of the pop-up menu.
Check for proxy configurations
Next, let’s look at having your app try to make a connection without any proxies in place. In the Network tab, select the “No proxy” option at the bottom of the pop-up menu. If you don’t see this option, try restarting your browser or unplugging your network cable.
Define a fallback route
Let’s see if we can get your app to fallback to the http://fallback route so we can check that route’s availability. In the Network tab, select the “Fallback route” button at the bottom. This will add a new graph to the bottom of the window that shows you the route your app is trying to use.
Switch to your app’s origin and reload the page
Now that you’ve changed the network settings and are trying to use a different route, you can switch to your app’s origin (the domain your app is on) and reload the page. In the Network tab, select the “Switch to origin” button at the bottom. In the pop-up menu, select your origin from the drop-down menu.
WebView errors can be frustrating, but they’re usually easy to fix. The first step is to inspect the WebView element in developer tools. Look for a red error message in the WebView. If you see one, check the element’s source code to see if you can find the cause of the error. Next, try unplugging the network cable and restarting your router to see if that helps. Finally, try switching to your app’s origin and reloading the page to see if you can find the issue.