I had several apps running under Chrome on a Windows 10 PC. It stopped working so I reinstalled leaflet but it still doesn’t work. Using Chrome Developer Tools, it stops in leaflet.js at

return document.namespaces.add(“lvml”, “urn:schemas-microsoft-com:vml”),

in

function je(t) {

It draws the map ok but won’t draw polylines.

Any help will be greatly appreciated.
Thanks

Re-installed leaflet. I expected that would fix whatever has gone wrong. BTW, I use xampp so the maps are locally-sourced