Found on more

Author: juoceano

folium/plugins/polyline_text_path.py

@@ -83,5 +83,5 @@ def render(self, **kwargs):
                                             "if it's not in a Figure.")
 
         figure.header.add_child(
-            JavascriptLink("https://rawgit.com/makinacorpus/Leaflet.TextPath/gh-pages/leaflet.textpath.js"),  # noqa
+            JavascriptLink("https://rawgit.com/makinacorpus/Leaflet.TextPath/leaflet0.8-dev/leaflet.textpath.js"),  # noqa
             name='polylinetextpath')