Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://test.scipedia.com:8081/localhost/v1/":): {\partial^2\over\partial x_1\partial x_2}ydy/dx{dy \over dx}{\operatorname{d}\!y\over\operatorname{d}\!x}