“File type not permitted for security reasons” error when trying to upload a gpx file

With WordPress 5.0.1 changes in MIME type validations were introduced, which also resulted in GPX uploads failing in Maps Marker Pro v4.0.10 or lower:

Please add the following code to wp-config.php as workaround, which will re-enable the upload of .gpx files:


If this does not help on your site, please have a look at other options available from this external tutorial.

The general mime type issue is planned to be solved with WordPress 5.1 (see related tickets #45707 and #40175 for details).

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