Map not load – Directory Starter

Sorry for my bad english. I have a problem with the map. If all categories in the map are enabled, the map will not load, whether it’s Google Maps or Openstreetmap. For example, if I disable “Eissalon”, the map loads. Here’s the console, what can I do?

/wp-admin/admin-ajax.php?action=geodir_ajax_action&geodir_ajax=map_ajax&ajax_action=cat&cat_id=61,62,63,65,66,67,64,54,55,56,57,58,59,60&search=&zl=5&gd_map_h=425&gd_map_w=1837&gd_posttype=gd_place:1
Failed to load resource: the server responded with a status of 500 ()

jquery.js?ver=1.12.4:4 GET /wp-admin/admin-ajax.php?action=geodir_ajax_action&geodir_ajax=map_ajax&ajax_action=cat&cat_id=61,62,63,65,66,67,64,54,55,56,57,58,59,60&search=&zl=5&lat_ne=56.327003515679806&lon_ne=50.05959042885138&lat_sw=44.509967279062046&lon_sw=-30.66794863364862&gd_posttype=gd_place 500 ()
send @ jquery.js?ver=1.12.4:4
ajax @ jquery.js?ver=1.12.4:4
map_ajax_search @ map.min.js?ver=4.9.7:1
build_map_ajax_search_param @ map.min.js?ver=4.9.7:1
onkeydown @ (index):358

my testsite: https://directory.schlemmerbox24.de
Best regards Luigi