NOT DETAILS 2 - Error de sintaxis, JSON mal formado

Notice: unserialize(): Error at offset 244 of 1125 bytes in /home/c1150192/public_html/mi_admin_new/apiDetalle.php on line 109

Warning: Invalid argument supplied for foreach() in /home/c1150192/public_html/mi_admin_new/apiDetalle.php on line 109
{"output":{"tipoMaquina":"Maquinas Nuevas","id":"29","archivo":"","vidriera":"0","cuotas":"","categoria_id":2,"categoria":"-Fresadoras","subcategoria_id":12,"subcategoria":"--De torreta","image":"http:\/\/www.maquinaseinsumossrl.com.ar\/assets\/img\/5vh.gif","marca_img":"http:\/\/www.maquinaseinsumossrl.com.ar\/assets\/img\/argologo.JPG","modelo":"Fresadora de torreta Argo 5 VH","linea":"Modelo 5 VH","stock":1,"youtube":"","informacion_extra":"