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Updated to the latest version 10.3.3. Getting now constantly on the backend these error messages when saving:

Warning: array_key_exists() expects parameter 2 to be array, null given in /home/ .... /wp-content/plugins/responsive-google-maps/classes/Plugin.php on line 156

Warning: Cannot modify header information – headers already sent by (output started at /home/ ... /wp-content/plugins/responsive-google-maps/classes/Plugin.php:156) in /home/ ... /wp-admin/post.php on line 198

Warning: Cannot modify header information – headers already sent by (output started at /home/ ... /wp-content/plugins/responsive-google-maps/classes/Plugin.php:156) in /home/ ... /wp-includes/pluggable.php on line 1216

Changes were saved, but instead of the edit screen I get always these messages.

Must have to do with Yoast SEO. When Yoast is deactivated, this error doesn’t happen.


There are known conflicts with Yoast SEO that the developer has a GitHub issue out on.

What version of our plugin were you on before? We only updated code unrelated to that section since the last update (calling a specific Google Maps API version to avoid a marker clustering bug) since 10.3.2.

Don’t know anymore, what version I was on before, but also there the error happened. It was actually the reason why I updated the plugin in hope, that these errors will not appear anymore.

I just bought it and it’s not working. I got this error: Oops! Something went wrong. This page didn’t load Google Maps correctly. See the JavaScript console for technical details.


In order to use our plugin, you will need to register for a Google Maps Javascript API key and input it into our settings.

Google has instructions on how to get the key here

Ok, I saw in the plugin description that an API wasn’t necessary. Why would I need that?

Google made changes so that you now need an API key. Some sites that didn’t have one before Google made that chance continue to work, but newer ones require it.

Google requires that key or our plugin on your site is barred from using their maps service.

Can you look at Why is the padding zero on the infowindow? The text is snug with the left edge.

Hi This plugin looks promising, but i wonder: Can it add new markers automatically from new locations (in new posts) inserted in a “Advanced custom fields” field? As you see I look for a solution that can update a map for me, containing the location of each new post. That way our visitors could access any post via an overview map. Works? (Or do you know some other plugin that could do the job?) Thanks, Kjetil


Our plugin does not integrate with other plugins for this purpose, and only reads markers from our settings.

You may be able to add the locations to a category and display a category map, so that as long as you set the category when you create the location, it will automatically display on that map.

OK – fine. Might very well work.

Can this plugin create a map from a gpx file?


Unfortunately our plugin does not support gpx files, and the maps must be created from our settings pages.


I wondered if you could please confirm that this would work with Wix? I can set an iFrame/HTML Code that I assume I would just copy the code into?

Thank you


Our plugin requires a WordPress site, whereas Wix is a site building service. Our plugin will also not work in an IFRAME.