contao-leaflet-maps/module/config/autoload.php

<?php

TemplateLoader::addFiles(
    array(
        'ce_leaflet_map'     => 'system/modules/leaflet/templates',
        'be_leaflet_geocode' => 'system/modules/leaflet/templates',
        'be_leaflet_credits' => 'system/modules/leaflet/templates',
    )
);