Fatal Error

[lamefe]

Unfortunately still (trunk version )makes trouble:

Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, class "CLASS" not found in wp-includes/rest-api/endpoints/class-wp-rest-controller.php:434 Stack trace:
#0 wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(1969): WP_REST_Controller->add_additional_fields_to_object(Array, Object(WP_REST_Request))
#1 wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(568): WP_REST_Posts_Controller->prepare_item_for_response(Object(WP_Post), Object(WP_REST_Request))
#2 wp-includes/rest-api/class-wp-rest-server.php(1171): WP_REST_Posts_Controller->get_item(Object(WP_REST_Request))
#3 wp-includes/rest-api/class-wp-rest-server.php(1018): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/wp/v2/posts/(?...', Array, NULL)
#4 wp-includes/rest-api.php(535): WP_REST_Server->dispatch(Object(WP_REST_Request))
#5 /wp-includes/rest-api.php(2884): rest_do_request(Object(WP_REST_Request))
#6 [internal function]: rest_preload_api_request(Array, '/wp/v2/posts/1?...')
#7 wp-includes/block-editor.php(633): array_reduce(Array, 'rest_preload_ap...', Array)
#8 wp-admin/edit-form-blocks.php(77): block_editor_rest_api_preload(Array, Object(WP_Block_Editor_Context))
#9 /wp-admin/post.php(187): require('/homepages/22/d...')
#10 {main} thrown in wp-includes/rest-api/endpoints/class-wp-rest-controller.php on line 434

Set up a whole new installation. 4.5 did work when using without GoogleMaps (unless the station issue). After trying 5.0 and switching back to 4.5 it's impossible to edit any old posts. While adding a new one, following messages appears:

Fatal error: Uncaught Error: Call to a member function set() on null in wp-content/plugins/simple-location/includes/class-rest-geo.php:410
Stack trace:
#0 wp-includes/rest-api/class-wp-rest-server.php(1171): REST_Geo::geocode(Object(WP_REST_Request))
#1 wp-includes/rest-api/class-wp-rest-server.php(1018): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/sloc_geo/1.0/g...', Array, NULL)
#2 wp-includes/rest-api/class-wp-rest-server.php(442): WP_REST_Server->dispatch(Object(WP_REST_Request))
#3 wp-includes/rest-api.php(410): WP_REST_Server->serve_request('/sloc_geo/1.0/g...')
#4 wp-includes/class-wp-hook.php(308): rest_api_loaded(Object(WP))
#5 wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#6 wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#7 wp-includes/class-wp.php(399): do_action_ref_array('parse_request', Array)
#8 wp-includes/class-wp.php(780): WP->parse_request('')
#9 wp-includes/functions.php(1332): WP->main('')
#10 wp-blog-header.php(16): wp()
#11 index.php(17): require('/homepages/22/d...')
#12 {main}
thrown in /wp-content/plugins/simple-location/include

[lamefe]

Found one configuration to work:

Strange: At another, older installation I tested it in August, it still works all fine. Even with Google Maps API.