Increased robustness of space save

src/common/datasets.js

@@ -11,9 +11,14 @@ function ajaxCall(data) {
         body: data,
     };
 
-    return fetch(ks_global.ajax_url, opts).then(function (response) {
-        return response.json();
-    });
+    return fetch(ks_global.ajax_url, opts).then(
+        function (response) {
+            return response.json();
+        },
+        function (reason) {
+            console.log(reason);
+        }
+    );
 }
 
 /**

src/datasets.php

@@ -45,6 +45,7 @@ function ks_update_space() {
         $name = ks_escape_space_name($_POST["space"]);
 
         ks_insert_or_update_graph($name, $graph);
+        echo json_encode($graph);
 
         wp_die();
     } else {