By default, the MapSearch 2.0 and RouteViewer 3.0 plugins load the Google Maps API without a Google API key. However, Google recommends against this, and in most cases, an API key is required (see here).
Therefore, we strongly recommend to provide the plugins with a Google API key (find out how on their respective documentation pages, see the links above). If you don't have a Google API key yet, follow the steps outlined on this page.
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