I don't know if this is the right place to put the issue as long as the source code of hikebikemap.com is not consistent with the repository, but anyway:
I have an error on loading https://hikebikemap.com/
Blocked loading mixed active content “http://cdn.leafletjs.com/leaflet-0.7/leaflet.css”
Blocked loading mixed active content “http://cdn.leafletjs.com/leaflet-0.7/leaflet.js”
Also I noticed, that leaflet versions are not updated for a long time. So I tried to update the dependencies and it worked for me quite well, at least the map is displayed and functional and no error displayed in console.
Maybe you want to update the website too.
Here is the code with dependencies:
I agree it'd be best that the CDN link was fixed. In the meantime, you can load from the tile server at http://www.mtbmap.cz/ and select the "Hike & Bike Map" layer instead.
I don't know if this is the right place to put the issue as long as the source code of hikebikemap.com is not consistent with the repository, but anyway: I have an error on loading https://hikebikemap.com/
The cause of the error is loading resources from both HTTP and HTTPS: https://developer.mozilla.org/en-US/docs/Web/Security/Mixed_content
Also I noticed, that leaflet versions are not updated for a long time. So I tried to update the dependencies and it worked for me quite well, at least the map is displayed and functional and no error displayed in console.
Maybe you want to update the website too. Here is the code with dependencies: