instead of having PDF generated I got this:

Dear friends,
instead of having PDF generated I got this:

{"html": "<div>\n <table class=\"report-dialog-message\">\n <tbody>\n <tr>\n <td>Opis<\/td>\n <td>Profil osoby, kontakty, grupy, itp.<\/td>\n <\/tr>\n <tr>\n <td>Typ pliku<\/td>\n <td>PDF<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <form action=\"http:\/\/sp6.dozp.pl\/persons\/manager\/request_person_profile_pdf.html\"\n method=\"post\" enctype=\"multipart\/form-data\"\n class=\"standalone\" name=\"form\" id=\"form\">\n \n <div class=\"viewspace\">\n \n \n \n \n \n \n \n <div class=\"required-info\">\n <span class=\"required\">*<\/span>\n &ndash; <span>oznacza wymagane pole<\/span>\n <\/div>\n \n \n <div>\n \n <fieldset>\n \n\n <div>\n <input name=\"file_type\" type=\"hidden\" value=\"PDF\" \/>\n <input name=\"description\" type=\"hidden\"\n value=\"Profil osoby, kontakty, grupy, itp.\" \/>\n <\/div>\n\n <\/fieldset>\n \n \n \n <\/div>\n \n \n <\/div>\n \n <div>\n <div class=\"buttons\">\n \n \n<input id=\"form-buttons-download\"\n name=\"form.buttons.download\"\n class=\"submit-widget button-field button-ok\"\n value=\"Wygeneruj\" type=\"submit\"\n onclick=\"return ST.dialogs.submit(this, this);\" \/>\n\n\n \n<input id=\"form-buttons-cancel\" name=\"form.buttons.cancel\"\n class=\"submit-widget button-field button-cancel\"\n value=\"Anuluj\" type=\"submit\"\n onclick=\"return ST.dialogs.close(this);\" \/>\n\n\n \n <\/div>\n <\/div>\n \n \n \n \n<\/form>\n<\/div>\n", "dialog": {"resizable": false, "width": "560", "draggable": false, "autoOpen": true, "modal": true, "position": ["center", "middle"]}}

What's wrong..