Error found when using L.icon

[AlbertoMCS]

Hi,
I have the following layer:

lyrPow = L.geoJSON(jsnPow,{pointToLayer:returnPow}).addTo(mymap);

function returnPow(json, latlng) {
                var att = json.properties;
                var name = att.distname;
                var custompopPow = '<p style="padding: 3px 3px;text-align: center;font-family: sans-serif;color:white;margin-bottom: 0;font-weight: bold;font-size: 12px;background:#BF40BF">Place Of Worship</p><b>Name: </b>'+name;
                
                return L.marker(latlng, {opacity:1, fillOpacity:1, icon:iconPow}).bindPopup(custompopPow, {permanent: false, opacity: 0, className : 'popupCustom', closeButton:'', maxWidth:400})

var svgPow = '<svg aria-hidden="true" focusable="false" data-prefix="fas" data-icon="pray" class="svg-inline--fa fa-pray fa-w-12" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512" height="12" width="12"><path fill="darkorchid" d="M256 128c35.35 0 64-28.65 64-64S291.35 0 256 0s-64 28.65-64 64 28.65 64 64 64zm-30.63 169.75c14.06 16.72 39 19.09 55.97 5.22l88-72.02c17.09-13.98 19.59-39.19 5.62-56.28-13.97-17.11-39.19-19.59-56.31-5.62l-57.44 47-38.91-46.31c-15.44-18.39-39.22-27.92-64-25.33-24.19 2.48-45.25 16.27-56.37 36.92l-49.37 92.03c-23.4 43.64-8.69 96.37 34.19 123.75L131.56 432H40c-22.09 0-40 17.91-40 40s17.91 40 40 40h208c34.08 0 53.77-42.79 28.28-68.28L166.42 333.86l34.8-64.87 24.15 28.76z"></path></svg>'; 
                var iconUrlPow = 'data:image/svg+xml;base64,' + btoa(svgPow);
                //var iconUrl = 'data:image/svg+xml;base64,' + svg;
                var iconPow = L.icon({
                iconUrl: iconUrlPow,
                });

But when clicking on one element I get the following error:

Leaflet.StyleEditor.js:1084 Uncaught TypeError: Cannot read properties of undefined (reading 'indexOf')
at e._getMarkerUrl (Leaflet.StyleEditor.js:1084)
at e._getMarkerUrlForStyle (Leaflet.StyleEditor.js:1079)
at e.createMarkerIcon (Leaflet.StyleEditor.js:1062)
at e._createMarkerIcon (Leaflet.StyleEditor.js:945)
at e.setNewMarker (Leaflet.StyleEditor.js:884)
at e.setStyle (Leaflet.StyleEditor.js:905)
at Leaflet.StyleEditor.js:934
at Array.forEach ()
at e.resetIconOptions (Leaflet.StyleEditor.js:933)
at e.initChangeStyle (Leaflet.StyleEditor.js:1524)

Any idea how can I solve this?

With normal L.marker (without L.Icon) it works well.
Many thanks.

[fupduck]

@AlbertoMCS sorry I did not have time to look at this code in quite a whlie - I started rewriting it in typescript and found quite some errors, but was not able to finish it yet.
sadly I currently don't have the time but will be happy to accept PRs

[AlbertoMCS]

@fupduck thanks for your response, not a problem. Really good news you are rewriting this awesome plugging! Do you know more or less when will be finished?