I copy pasted a configMap file from an online tutorial and an error popped while trying to apply it. this is the file:

    apiVersion: v1
    kind: ConfigMap
    metadata:
      name: nginx-config
      labels:
        tier: backend
    data:
      config : |
        server {
          index index.php index.html;
          error_log  /var/log/nginx/error.log;
          access_log /var/log/nginx/access.log;

          root /dir;

          location / {
              try_files $uri $uri/ /index.php?$query_string;
          }

          location ~ .php$ {
              try_files $uri =404;
              fastcgi_split_path_info ^(.+.php)(/.+)$;
              fastcgi_pass php:9000;
              fastcgi_index index.php;
              include fastcgi_params;
              fastcgi_param SCRIPT_FILENAME                 
              $document_root$fastcgi_script_name;
              fastcgi_param PATH_INFO $fastcgi_path_info;
          }
       }

this is the error: line 28: did not find expected key