Bug fixed

renderer.php

@@ -124,9 +124,11 @@ class format_competencegraph_renderer extends format_section_renderer_base {
     }
 
     public function print_nodes_graph($course, $sections, $mods, $modnames, $modnamesused) {
-        echo '<script>';
+        echo "<script>
 
-        echo 'var svgContainer = d3.select("#maincontent").append("svg")
+            $($('.card-body')[1]).append($('<div id=\"graph_id\"></div>'));";
+
+        echo 'var svgContainer = d3.select("#graph_id").append("svg")
                 .attr("width", 800)
                 .attr("height", 1000);';