FATAL ERROR (1) Method Singular_Stdlib_OrderedList::__toString() must not throw an exceptionFatal error on line 0 in file F:\web\feedback.bizagi.com\suite\es\application\3.3.1\modules\feedback\templates\feedback_topic

Fatal error: Method Singular_Stdlib_OrderedList::__toString() must not throw an exception in F:\web\feedback.bizagi.com\suite\es\application\3.3.1\modules\feedback\templates\feedback_topic_show.phtml on line 0
FATAL ERROR (1) Method Singular_Stdlib_OrderedList::__toString() must not throw an exceptionFatal error on line 0 in file F:\web\feedback.bizagi.com\suite\es\application\3.3.1\modules\feedback\templates\feedback_topic_show.phtml, PHP 5.4.45 (WINNT)

Error has occured!

Error description:

FATAL ERROR (1) Method Singular_Stdlib_OrderedList::__toString() must not throw an exception

Fatal error on line 0 in file F:\web\feedback.bizagi.com\suite\es\application\3.3.1\modules\feedback\templates\feedback_topic_show.phtml, PHP 5.4.45 (WINNT)

Requested page:

http://feedback.bizagi.com/suite/es/topic/servidor-smtp-gratuito

Module name:	feedback
Controller name:	topic
Action name:	show
Parameters:	slug = (string) servidor-smtp-gratuito

Stack trace:

In file	On line	Called class	Called function	With arguments
		System_Lib_Controller_Plugin_CrashReport	shutdownFunction

System information:

PHP version:

5.4.45 on WINNT runned as cgi-fcgi

Loaded extensions:

Core, bcmath, calendar, ctype, date, ereg, filter, ftp, hash, iconv, json, mcrypt, SPL, odbc, pcre, Reflection, session, standard, mysqlnd, tokenizer, zip, zlib, libxml, dom, PDO, openssl, SimpleXML, wddx, xml, xmlreader, xmlwriter, cgi-fcgi, curl, gd, mbstring, mysql, mysqli, Phar, pdo_mysql, xmlrpc, xsl, mhash

MySQL server:

MySQL 5.7.11 via PDO_MYSQL 1.0.2

UseResponse:

Product version:

3.3.1 released on September 9, 2015 12:00:00 AM GMT by USWebStyle, Inc

Installed modules:

System	v. 3.3.1 on September 9, 2015 12:00:00 AM GMT by USWebStyle, Inc
Resources	v. 3.2 on February 20, 2015 12:00:00 AM GMT by USWebStyle, Inc
Feedback	v. 3.0 on October 9, 2013 12:00:00 AM GMT by USWebStyle, Inc
Announcements	v. 3.0 on March 20, 2014 12:00:00 AM GMT by USWebStyle, Inc
Chat	v. 3.0 on March 15, 2013 12:00:00 AM GMT by USWebStyle, Inc
Polls	v. 3.0 on June 7, 2012 12:00:00 AM GMT by USWebStyle, Inc
Single Sign-On	v. 3.0 on August 5, 2013 12:00:00 AM GMT by UseResponse Inc.

Autoglobal variables:

GETArray
(
)

POSTArray
(
)

COOKIEArray
(
)

SESSIONArray
(
)