Error has occured!
Error description:

EXCEPTION: Argument 2 passed to System_Model_DbTable_Objects::findById() must be an instance of System_Model_User, null given, called in /var/www/html/application/5.2.3/modules/system/controllers/ObjectController.php on line 156

Exception on line 1071 in file /var/www/html/application/5.2.3/modules/system/models/DbTable/Objects.php, PHP 7.2.22-1+ubuntu16.04.1+deb.sury.org+1 (Linux)

Requested page:
http://community.yellowfinbi.com/subscribe/2316/0?token=sdhoKB0pBPd62utj9S9DD4gDIhjTPom7

Module name:system
Controller name:object
Action name:subscribe
Parameters:object_id = (string) 2316
subscribe = (string) 0
token = (string) sdhoKB0pBPd62utj9S9DD4gDIhjTPom7
Stack trace:
In file On line Called class Called function With arguments
ObjectController.php156System_Model_DbTable_ObjectsfindByIdstring, NULL
Action.php516ObjectControllersubscribeAction
Standard.php295Zend_Controller_Actiondispatchstring
Front.php954Zend_Controller_Dispatcher_Standarddispatchobject, object
Bootstrap.php844Zend_Controller_Frontdispatch
index.php48Singular_Bootstraprun
index.php55{closure}
System information:
PHP version:
7.2.22-1+ubuntu16.04.1+deb.sury.org+1 on Linux runned as apache2handler

Loaded extensions:
Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, sodium, session, standard, apache2handler, mysqlnd, PDO, xml, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, imap, json, exif, mysqli, pdo_mysql, Phar, posix, readline, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache

MySQL server:
MySQL 5.7.27 via PDO_MYSQL 7.2.22-1+ubuntu16.04.1+deb.sury.org+1
UseResponse:
Product version:
5.2.3 released on November 11, 2019 12:00:00 AM GMT by UseResponse Inc.

Installed modules:
Systemv. 5.2.3 on November 11, 2019 12:00:00 AM GMT by UseResponse Inc.
Resourcesv. 3.2 on February 20, 2015 12:00:00 AM GMT by UseResponse Inc.
Feedbackv. 3.0 on October 9, 2013 12:00:00 AM GMT by UseResponse Inc.
Announcementsv. 3.0 on March 20, 2014 12:00:00 AM GMT by UseResponse Inc.
Knowledge Basev. 3.0 on March 15, 2013 12:00:00 AM GMT by UseResponse Inc.
Help Deskv. 3.0 on February 20, 2015 12:00:00 AM GMT by UseResponse Inc.
Single Sign-Onv. 3.0 on August 5, 2013 12:00:00 AM GMT by UseResponse Inc.
Jira Integrationv. 4.0 on by UseResponse Inc.
Pollsv. 3.0 on June 7, 2012 12:00:00 AM GMT by UseResponse Inc.
Apache ActiveMQv. 3.0 on May 25, 2016 12:00:00 AM GMT by UseResponse Inc.
Enterprisev. 4.0 on February 20, 2015 12:00:00 AM GMT by UseResponse Inc.
Worldsv. 4.0 on February 20, 2015 12:00:00 AM GMT by UseResponse Inc.
Forum Widgetv. 4.0 on February 5, 2017 12:00:00 AM GMT by UseResponse Inc.
Yellowfinv. 1.0 on May 24, 2017 12:00:00 AM GMT by UseResponse Inc.
Wordpress Blogposts Widgetv. 1.0 on March 16, 2018 12:00:00 AM GMT by UseResponse Inc.
Confluence Wikiv. 1.0 on May 3, 2018 12:00:00 AM GMT by USWebStyle, Inc
Backupv. 1.0 on August 26, 2018 12:00:00 AM GMT by UseResponse Inc.
Salesforcev. 4.0 on January 2, 2019 12:00:00 AM GMT by UseResponse Inc.
Autoglobal variables:

GET

Array ( [token] => sdhoKB0pBPd62utj9S9DD4gDIhjTPom7 )

POST

Array ( )

COOKIE

Array ( )

SESSION

Array ( )