use absolute uri
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.45.0/codemirror.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clusterize.js/0.18.0/clusterize.min.js"></script>
- <script>LANGUAGE_BASE_URL = "tree-sitter-elixir";</script>
+ <script>LANGUAGE_BASE_URL = "/tree-sitter-elixir";</script>
<script src=tree-sitter.js></script>
<script src=playground.js></script>
