1. Reset survey theme
2. See faulty value for cssframework with @attributes etc (should be simple string), in the options column for lime_template_configuration table

{"container":"on","zebrastriping":"off","stickymatrixheaders":"off","greyoutselected":"off","hideprivacyinfo":"off","crosshover":"off","showpopups":"1","notables":"1","showclearall":"off","questionhelptextposition":"top","fixnumauto":"enable","questionborder":"on","questioncontainershadow":"on","bodybackgroundcolor":"#ffffff","fontcolor":"#444444","questionbackgroundcolor":"#ffffff","checkicon":"f00c","backgroundimage":"off","backgroundimagefile":".\/files\/pattern.png","brandlogo":"on","brandlogofile":"image::theme::files\/logo.png","animatebody":"off","bodyanimation":"fadeInRight","bodyanimationduration":"500","animatequestion":"off","questionanimation":"flipInX","questionanimationduration":"500","animatealert":"off","alertanimation":"shake","alertanimationduration":"500","animatecheckbox":"on","checkboxanimation":"rubberBand","checkboxanimationduration":"500","animateradio":"on","radioanimation":"zoomIn","radioanimationduration":"500","font":"noto","cssframework":{"@attributes":{"type":"dropdown","category":"Simple options","width":"12","title":"Variations","parent":"cssframework"}}}