Tiles Grid: Cannot read property 'replace' of undefined at UGFunctions.stripTags

The default theme works just fine for me, but Tile Grid does not complete initialization of the gallery.

Uncaught TypeError: Cannot read property 'replace' of undefined
    at UGFunctions.stripTags (unitegallery.js:2316)
    at Object.setHtmlThumb [as funcSetCustomThumbHtml] (unitegallery.js:10798)
    at appendHtmlThumbFromItem (unitegallery.js:2555)
    at UGThumbsGeneral.setHtmlThumbs (unitegallery.js:2583)
    at UGTileDesign.setHtml (unitegallery.js:11466)
    at setHtml (unitegallery.js:7266)
    at UGThumbsGrid.setHtml (unitegallery.js:8685)
    at setHtml (ug-theme-tilesgrid.js:143)
    at runTheme (ug-theme-tilesgrid.js:234)
    at UGTheme_tilesgrid.run (ug-theme-tilesgrid.js:438)

DOM is straightforward Handlebars output…

<div id="holesGallery">
    {{#each galleryImages}}
        <img src="{{this.thumb.url}}" data-image="{{this.large.url}}" />
    {{/each}}
</div>

JS…

$('#holesGallery').unitegallery({
   gallery_theme: "tilesgrid"
});

[stpa81]

Had the same problem and solved it by adding an “alt” attribute to the images.

[pedrofurtado]

@vvvmax Is this a bug? More than a year and this issue still happens, in version 1.7.40