DEBUG: wp_remote_get to http://ecozahori.panel.es:10080/zahori/counters_big.json
DEBUG: arguments: Array ( [timeout] => 5 )
DEBUG: error getting URL:cURL error 7: Failed to connect to ecozahori.panel.es port 10080 after 2944 ms: No route to host
DEBUG: no data received: check url of json-feed
EMPTY api-answer: No JSON received – is the API down?
Check the API-URL in the Block-Settings, please.
Use «/json-content-importer/json/gutenbergblockexample1.json» as example. You might switch on the debugmode on the right side.