leaflet.js cdn

The solution for this is noted below

leaflet.js cdn

Solution

<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" />
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>

Try other methods by searching on the site. That is if this doesn’t work