I didn't see anything in the readme about not submitting issues here, so if this is the wrong place, sorry.
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 18.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd" [
<!ENTITY ns_flows "http://ns.adobe.com/Flows/1.0/">
<!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
<!ENTITY ns_ai "http://ns.adobe.com/AdobeIllustrator/10.0/">
<!ENTITY ns_graphs "http://ns.adobe.com/Graphs/1.0/">
<!ENTITY ns_vars "http://ns.adobe.com/Variables/1.0/">
<!ENTITY ns_imrep "http://ns.adobe.com/ImageReplacement/1.0/">
<!ENTITY ns_sfw "http://ns.adobe.com/SaveForWeb/1.0/">
<!ENTITY ns_custom "http://ns.adobe.com/GenericCustomNamespace/1.0/">
<!ENTITY ns_adobe_xpath "http://ns.adobe.com/XPath/1.0/">
]>
<svg version="1.0" id="Layer_1" xmlns:x="&ns_extend;" xmlns:i="&ns_ai;" xmlns:graph="&ns_graphs;"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:a="http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/"
x="0px" y="0px" viewBox="0 0 17.4 32" enable-background="new 0 0 17.4 32" xml:space="preserve">
<metadata>
<sfw xmlns="&ns_sfw;">
<slices></slices>
<sliceSourceBounds height="31.8" width="17.4" bottomLeftOrigin="true" x="0" y="-31.8"></sliceSourceBounds>
</sfw>
</metadata>
<path fill="#FFFFFF" d="M16.7,13.3C11.4,8.9,6.1,4.4,0.9,0C0.6-0.2-0.7,4.3,0.5,5.3C4.7,8.8,9,12.4,13.2,15.9
C9,19.5,4.7,23,0.5,26.6c-1.2,1,0.1,5.5,0.4,5.2c5.3-4.4,10.6-8.8,15.8-13.3C17.6,17.8,17.6,14.1,16.7,13.3z"/>
</svg>
Fatal error: First argument needs to be a number, array or string.
TypeError: First argument needs to be a number, array or string.
at new Buffer (buffer.js:188:15)
at /project/node_modules/imagemin-svgo/index.js:24:29
at /project/node_modules/imagemin-svgo/node_modules/svgo/lib/svgo.js:31:13
at Object.sax.onerror (/project/node_modules/imagemin-svgo/node_modules/svgo/lib/svgo/svg2js.js:120:9)
at emit (/project/node_modules/imagemin-svgo/node_modules/svgo/node_modules/sax/lib/sax.js:615:33)
at error (/project/node_modules/imagemin-svgo/node_modules/svgo/node_modules/sax/lib/sax.js:644:3)
at strictFail (/project/node_modules/imagemin-svgo/node_modules/svgo/node_modules/sax/lib/sax.js:662:22)
at Object.write (/project/node_modules/imagemin-svgo/node_modules/svgo/node_modules/sax/lib/sax.js:1336:11)
at module.exports (/project/node_modules/imagemin-svgo/node_modules/svgo/lib/svgo/svg2js.js:131:9)
at SVGO.optimize (/project/node_modules/imagemin-svgo/node_modules/svgo/lib/svgo.js:28:5)