Replace

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512pt"
    height="512pt"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
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        x2="512"
        y1="256"
        y2="256"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#00f38d" />
        <stop offset="1" stop-color="#009eff" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M512 256c0 141.387-114.613 256-256 256S0 397.387 0 256 114.613 0 256 0s256 114.613 256 256zm0 0"
    />
    <g fill="#fff">
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            d="M256 82.543c-46.855 0-91.031 18.805-123.313 51.465v-25.723h-30v75.43h75.426v-30h-22.695A143.23 143.23 0 0 1 256 112.543c79.102 0 143.457 64.355 143.457 143.457S335.102 399.457 256 399.457h-.672c-78.73 0-142.785-64.355-142.785-143.457h-30c0 46.355 17.91 89.906 50.437 122.621 32.59 32.781 76.043 50.836 122.348 50.836H256c95.645 0 173.457-77.812 173.457-173.457S351.645 82.543 256 82.543zm0 0"
        />
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        />
    </g>
</svg>