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Depending on your browser its naming is slightly different, but following Chrome and FireFox, we’ll call it the ‘Console’. Every browser has a different way of accessing the console, so please select your browser for detailed instructions.
Use the tab you opened the console with to navigate to the page you want to check, or if you’re already on that page, reload it.
If there are no errors, you should see something like this:
If there are errors on the page, you’ll see a red line. For example like this:
You can expand the error in the console by clicking the black arrow. It’ll then show something like this: