SVG error does not support non integer width,height

[offbeat-stuff]

Sample code:
https://play.nim-lang.org/#ix=4jzw
Here is a sample svg:

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="347.0625" height="347.078125" viewBox="0 0 347.0625 347.078125">
<defs>
<filter id="filter-remove-color-and-invert-alpha" x="0%" y="0%" width="100%" height="100%">
<feColorMatrix color-interpolation-filters="sRGB" values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 -1 1"/>
</filter>
<filter id="filter-0" x="0%" y="0%" width="100%" height="100%">
<feImage xlink:href="#compositing-group-1" result="source" x="0" y="0" width="416.475" height="416.49375"/>
<feImage xlink:href="#compositing-group-2" result="destination" x="0" y="0" width="416.475" height="416.49375"/>
<feComposite in="source" in2="destination" operator="arithmetic" k1="0" k2="1" k3="1" k4="0" color-interpolation-filters="sRGB"/>
</filter>
<g>
<g id="glyph-0-0">
<path d="M 144.671875 -31.375 L 144.671875 0 L 26.386719 0 L 26.386719 -31.375 L 70.234375 -31.375 L 70.234375 -141.128906 L 32.820312 -117.761719 L 15.230469 -146.25 L 73.910156 -181.957031 L 110.671875 -181.957031 L 110.671875 -31.375 Z M 144.671875 -31.375 "/>
</g>
<g id="glyph-0-1">
<path d="M 78.769531 -186.550781 C 100.472656 -186.550781 116.863281 -178.171875 127.933594 -161.410156 C 139.003906 -144.652344 144.542969 -121.304688 144.542969 -91.371094 C 144.542969 -61.351562 139.003906 -37.875 127.933594 -20.941406 C 116.863281 -4.003906 100.472656 4.464844 78.769531 4.464844 C 56.890625 4.464844 40.457031 -4.003906 29.472656 -20.941406 C 18.488281 -37.875 12.996094 -61.351562 12.996094 -91.371094 C 12.996094 -121.304688 18.488281 -144.652344 29.472656 -161.410156 C 40.457031 -178.171875 56.890625 -186.550781 78.769531 -186.550781 Z M 78.769531 -156.488281 C 69.492188 -156.488281 62.710938 -151.519531 58.421875 -141.585938 C 54.132812 -131.652344 51.988281 -114.914062 51.988281 -91.371094 C 51.988281 -83.671875 52.117188 -76.820312 52.382812 -70.828125 C 52.644531 -64.832031 53.039062 -59.515625 53.5625 -54.875 L 97.9375 -147.691406 C 95.835938 -151.019531 93.230469 -153.316406 90.125 -154.585938 C 87.019531 -155.855469 83.234375 -156.488281 78.769531 -156.488281 Z M 105.289062 -91.371094 C 105.289062 -101.4375 105.070312 -109.925781 104.632812 -116.839844 L 62.753906 -30.324219 C 64.679688 -28.488281 66.976562 -27.21875 69.644531 -26.519531 C 72.316406 -25.820312 75.355469 -25.46875 78.769531 -25.46875 C 84.984375 -25.46875 90.039062 -27.570312 93.933594 -31.769531 C 97.828125 -35.972656 100.691406 -42.90625 102.53125 -52.578125 C 104.371094 -62.25 105.289062 -75.179688 105.289062 -91.371094 Z M 105.289062 -91.371094 "/>
</g>
</g>
<g id="compositing-group-0" transform="translate(34.70625, 34.707813)">
<rect x="-34.70625" y="-34.707813" width="416.475" height="416.49375" fill="rgb(0%, 0%, 0%)" fill-opacity="0"/>
<rect x="-34.70625" y="-34.707813" width="416.475" height="416.49375" fill="rgb(100%, 100%, 100%)" fill-opacity="1"/>
</g>
<mask id="mask-0">
<use xlink:href="#compositing-group-0"/>
</mask>
<mask id="mask-1">
<use xlink:href="#compositing-group-0" filter="url(#filter-remove-color-and-invert-alpha)"/>
</mask>
<g id="compositing-group-1" mask="url(#mask-0)">
<g transform="translate(34.70625, 34.707813)">
<rect x="-34.70625" y="-34.707813" width="416.475" height="416.49375" fill="rgb(100%, 100%, 100%)" fill-opacity="1"/>
</g>
</g>
<g id="compositing-group-2" mask="url(#mask-1)">
<g transform="translate(34.70625, 34.707813)">
</g>
</g>
</defs>
<g filter="url(#filter-0)" transform="translate(-34.70625, -34.707813)">
<rect x="0" y="0" width="416.475" height="416.49375" fill="rgb(0%, 0%, 0%)" fill-opacity="1"/>
</g>
<g fill="rgb(0%, 0%, 0%)" fill-opacity="1">
<use xlink:href="#glyph-0-0" x="16" y="252.3125"/>
<use xlink:href="#glyph-0-1" x="173.53125" y="252.3125"/>
</g>
</svg>