Re-export the icon on vectr.com, so it can be editable again. The current icon.svg was reduced size by a contributor previously, but the border is detached after that, which cannot edit by any svg editor anymore.

public/icon.svg

@@ -1,10 +1,9 @@
-<svg width="640" height="640" viewBox="0 0 640 640" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M490.4 235.64C544.09 358.38 544.09 435.34 490.4 466.5C409.85 513.24 199.96 527.49 139.54 455.64C99.2601 407.74 99.2601 334.4 139.54 235.64C180.5 168.18 238.71 134.45 314.17 134.45C389.64 134.45 448.38 168.18 490.4 235.64Z" fill="url(#paint0_linear_381_799)"/>
-<path d="M490.4 235.64C544.09 358.38 544.09 435.34 490.4 466.5C409.85 513.24 199.96 527.49 139.54 455.64C99.2601 407.74 99.2601 334.4 139.54 235.64C180.5 168.18 238.71 134.45 314.17 134.45C389.64 134.45 448.38 168.18 490.4 235.64Z" stroke="#F2F2F2" stroke-opacity="0.51" stroke-width="200"/>
-<defs>
-<linearGradient id="paint0_linear_381_799" x1="259.78" y1="261.15" x2="463.85" y2="456.49" gradientUnits="userSpaceOnUse">
+<svg width="640" height="640" viewBox="0 0 640 640" xml:space="preserve" xmlns="http://www.w3.org/2000/svg">
+<g transform="matrix(1 0 0 1 320 320)">
+<linearGradient id="S3" gradientUnits="userSpaceOnUse" gradientTransform="matrix(1 0 0 1 -319.99875 -320.0001577393)"  x1="259.78" y1="261.15" x2="463.85" y2="456.49">
 <stop stop-color="#5CDD8B"/>
 <stop offset="1" stop-color="#86E6A9"/>
 </linearGradient>
-</defs>
+<path style="stroke: rgb(242,242,242); stroke-opacity: 0.51; stroke-width: 200; stroke-dasharray: none; stroke-linecap: butt; stroke-dashoffset: 0; stroke-linejoin: miter; stroke-miterlimit: 4; fill: url(#S3); fill-rule: nonzero; opacity: 1;"  transform=" translate(0, 0)" d="M 170.40125 -84.36016 C 224.09125 38.37984 224.09125 115.33984 170.40125 146.49984 C 89.85125000000001 193.23984000000002 -120.03875 207.48984000000002 -180.45875 135.63984 C -220.73875 87.73983999999999 -220.73875 14.399839999999998 -180.45875 -84.36016000000001 C -139.49875 -151.82016 -81.28875000000001 -185.55016 -5.828750000000014 -185.55016 C 69.64124999999999 -185.55016 128.38125 -151.82016000000002 170.40124999999998 -84.36016000000001 z" stroke-linecap="round" />
+</g>
 </svg>