array(1) {
  ["is_array()"]=>
  bool(false)
}
object(Curl_response)#46 (7) {
  ["url"]=>
  string(71) "https://api.spar-mit.com/public/api/getTopic/reisethemen/wellness/rhoen"
  ["http_status"]=>
  int(0)
  ["error_no"]=>
  int(28)
  ["error_msg"]=>
  string(42) "Resolving timed out after 508 milliseconds"
  ["cache_info"]=>
  NULL
  ["decoded":"Curl_response":private]=>
  NULL
  ["plain_response":"Curl_response":private]=>
  bool(false)
}

Last Curl_lib->error:
array(4) {
  ["url"]=>
  string(71) "https://api.spar-mit.com/public/api/getTopic/reisethemen/wellness/rhoen"
  ["error"]=>
  string(42) "Resolving timed out after 508 milliseconds"
  ["errno"]=>
  int(28)
  ["http_status"]=>
  int(0)
}