Response Headers (image/svg+xml)

Hi
I don’t know what is it that is loading in my site:

data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' preserveAspectRatio='xMidYMid meet' overflow='visible' height='100%' viewBox='0 0 126 26' fill='black' stroke='none'%3E%3Cpath d='M3,10.2c2.6,0,2.6,2,2.6,3.2S4.4,16.5,3,16.5s-3-1.4-3-3.2S0.4,10.2,3,10.2z M18.8,10.2c1.7,0,3.2,1.4,3.2,3.2s-1.4,3.2-3.2,3.2c-1.7,0-3.2-1.4-3.2-3.2S17,10.2,18.8,10.2z M34.6,10.2c1.5,0,2.6,1.4,2.6,3.2s-0.5,3.2-1.9,3.2c-1.5,0-3.4-1.4-3.4-3.2S33.1,10.2,34.6,10.2z M50.5,10.2c1.7,0,3.2,1.4,3.2,3.2s-1.4,3.2-3.2,3.2c-1.7,0-3.3-0.9-3.3-2.6S48.7,10.2,50.5,10.2z M66.2,10.2c1.5,0,3.4,1.4,3.4,3.2s-1.9,3.2-3.4,3.2c-1.5,0-2.6-0.4-2.6-2.1S64.8,10.2,66.2,10.2z M82.2,10.2c1.7,0.8,2.6,1.4,2.6,3.2s-0.1,3.2-1.6,3.2c-1.5,0-3.7-1.4-3.7-3.2S80.5,9.4,82.2,10.2zM98.6,10.2c1.5,0,2.6,0.4,2.6,2.1s-1.2,4.2-2.6,4.2c-1.5,0-3.7-0.4-3.7-2.1S97.1,10.2,98.6,10.2z M113.4,10.2c1.2,0,2.2,0.9,2.2,3.2s-0.1,3.2-1.3,3.2s-3.1-1.4-3.1-3.2S112.2,10.2,113.4,10.2z'/%3E%3C/svg%3E

I changed to default wordpress theme and this file was not loaded

this is the image url
data:image/svg+xml,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20preserveAspectRatio%3D'xMidYMid%20meet'%20overflow%3D'visible'%20height%3D'100%25'%20viewBox%3D'0%200%20126%2026'%20fill%3D'black'%20stroke%3D'none'%3E%3Cpath%20d%3D'M3%2C10.2c2.6%2C0%2C2.6%2C2%2C2.6%2C3.2S4.4%2C16.5%2C3%2C16.5s-3-1.4-3-3.2S0.4%2C10.2%2C3%2C10.2z%20M18.8%2C10.2c1.7%2C0%2C3.2%2C1.4%2C3.2%2C3.2s-1.4%2C3.2-3.2%2C3.2c-1.7%2C0-3.2-1.4-3.2-3.2S17%2C10.2%2C18.8%2C10.2z%20M34.6%2C10.2c1.5%2C0%2C2.6%2C1.4%2C2.6%2C3.2s-0.5%2C3.2-1.9%2C3.2c-1.5%2C0-3.4-1.4-3.4-3.2S33.1%2C10.2%2C34.6%2C10.2z%20M50.5%2C10.2c1.7%2C0%2C3.2%2C1.4%2C3.2%2C3.2s-1.4%2C3.2-3.2%2C3.2c-1.7%2C0-3.3-0.9-3.3-2.6S48.7%2C10.2%2C50.5%2C10.2z%20M66.2%2C10.2c1.5%2C0%2C3.4%2C1.4%2C3.4%2C3.2s-1.9%2C3.2-3.4%2C3.2c-1.5%2C0-2.6-0.4-2.6-2.1S64.8%2C10.2%2C66.2%2C10.2z%20M82.2%2C10.2c1.7%2C0.8%2C2.6%2C1.4%2C2.6%2C3.2s-0.1%2C3.2-1.6%2C3.2c-1.5%2C0-3.7-1.4-3.7-3.2S80.5%2C9.4%2C82.2%2C10.2zM98.6%2C10.2c1.5%2C0%2C2.6%2C0.4%2C2.6%2C2.1s-1.2%2C4.2-2.6%2C4.2c-1.5%2C0-3.7-0.4-3.7-2.1S97.1%2C10.2%2C98.6%2C10.2z%20M113.4%2C10.2c1.2%2C0%2C2.2%2C0.9%2C2.2%2C3.2s-0.1%2C3.2-1.3%2C3.2s-3.1-1.4-3.1-3.2S112.2%2C10.2%2C113.4%2C10.2z'%2F%3E%3C%2Fsvg%3E