The iframe src is "https://fosteringaok.org/mapsvg_sc?mapsvg_shortcode=%5Btest_shortcode%5D"
Meta Box generates this error:
Fatal error: Uncaught MetaBox\Dependencies\Twig\Error\LoaderError: View "mapsvg_sc" is not defined. in /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/src/TwigLoader.php:47 Stack trace: #0 /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/dependencies/Twig/Environment.php(261): MBViews\TwigLoader->getCacheKey('mapsvg_sc') #1 /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/dependencies/Twig/Environment.php(309): MetaBox\Dependencies\Twig\Environment->getTemplateClass('mapsvg_sc') #2 /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/dependencies/Twig/Environment.php(277): MetaBox\Dependencies\Twig\Environment->load('mapsvg_sc') #3 /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/src/Renderer.php(46): MetaBox\Dependencies\Twig\Environment->render('mapsvg_sc', Array) #4 /wp-content/plugins/meta-box- in /wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/src/TwigLoader.php on line 47
This URL is handled by another plugin. Meta Box should not be trying to render a template. The shortcode being rendered in the iframe does not use MB in any way. I saw a discussion about Twig version conflicts, but MapSVG does not use Twig.
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