Strange code after wheels

Hi. I am getting that code here when I am opening my page. The wheels are running and after this this error appears.

Whats the problem? Thanks.

{"html":"
\n
\n
<\/i><\/li>\n
\nSuperga<\/a><\/a>\n<\/li>\n
\"Aktuellen<\/a><\/li>\n<\/ol><\/div>\n
<\/div>\n
\n
\n
Name<\/div>\n
Gr\u00f6\u00dfe<\/div>\n
Ge\u00e4ndert<\/div>\n<\/div><\/div>\n
\n
\n
\n
<\/div>\n
2017<\/div>\n<\/div><\/a><\/div>\n
--<\/div>\n
--<\/div>\n<\/li>\n
\n
\n
<\/div>\n
2018<\/div>\n<\/div><\/a><\/div>\n
--<\/div>\n
--<\/div>\n<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div><\/div>","imgs":[]}