Fatal error: Uncaught Error: Call to undefined function json_decode() in /home/cpopt/public_html/libraries/joomla/registry/format/json.php:67
Stack trace:
#0 /home/cpopt/public_html/libraries/joomla/registry/registry.php(279): JRegistryFormatJSON->stringToObject('{"allowUserRegi...', Array)
#1 /home/cpopt/public_html/libraries/joomla/application/component/helper.php(423): JRegistry->loadString('{"allowUserRegi...')
#2 /home/cpopt/public_html/libraries/joomla/application/component/helper.php(43): JComponentHelper::_load('com_users')
#3 /home/cpopt/public_html/libraries/joomla/application/component/helper.php(92): JComponentHelper::getComponent('com_users', false)
#4 /home/cpopt/public_html/libraries/joomla/access/access.php(306): JComponentHelper::getParams('com_users')
#5 /home/cpopt/public_html/libraries/joomla/access/access.php(392): JAccess::getGroupsByUser(0)
#6 /home/cpopt/public_html/libraries/joomla/user/user.php(452): JAccess::getAuthorisedViewLevels(0)
#7 /home/cpopt/public_html/libraries/joomla/plugin/helper.php in /home/cpopt/public_html/libraries/joomla/registry/format/json.php on line 67