无法获取URL数据，solr日志错误

Question

我想从URL提取json数据，但出现500错误，我不了解solr。如何解决这个问题？

$json_url = "http://localhost:8983/solr/admin/collections?action=CLUSTERSTATUS";
$crl = curl_init();
curl_setopt($crl, CURLOPT_URL, $json_url);
curl_setopt($crl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($crl, CURLOPT_SSL_VERIFYPEER, FALSE); 
$json = curl_exec($crl);
curl_close($crl);
$clusterStatus = json_decode($json, TRUE);
echo $clusterStatus;

控制台错误-无法加载资源：服务器的状态为500（内部服务器错误）

以下我想在结果上回显的数据。

  "responseHeader": {
    "status": 0,
    "QTime": 1
  },
  "cluster": {
    "collections": {
      "abc": {
        "pullReplicas": "0",
        "replicationFactor": "1",
        "shards": {
          "shard1": {
            "range": "80000000-7fffffff",
            "state": "active",
            "replicas": {
              "core_node2": {
                "core": "abc_shard1_replica_n1",
                "base_url": "http://192.168.43.75:8983/solr",
                "node_name": "192.168.43.75:8983_solr",
                "state": "active",
                "type": "NRT",
                "force_set_state": "false",
                "leader": "true"
              },
              "core_node4": {
                "core": "abc_shard1_replica_n3",
                "base_url": "http://192.168.43.75:8983/solr",
                "node_name": "192.168.43.75:8983_solr",
                "state": "active",
                "type": "NRT",