Error code

[7ekaJ 0]

Spoiler

ErrorException: List module does not exist (256)
#0 [internal function]: IPS\IPS::errorHandler(256, 'List module doe...', '/home/accoagok/...', 188, Array)
#1 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/HTMLModuleManager.php(188): trigger_error('List module doe...', 256)
#2 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/HTMLModuleManager.php(341): HTMLPurifier_HTMLModuleManager->registerModule('List')
#3 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/HTMLModuleManager.php(287): HTMLPurifier_HTMLModuleManager->processModule('List')
#4 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/HTMLDefinition.php(220): HTMLPurifier_HTMLModuleManager->setup(Object(HTMLPurifier_Config))
#5 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/HTMLDefinition.php(195): HTMLPurifier_HTMLDefinition->processModules(Object(HTMLPurifier_Config))
#6 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/Definition.php(51): HTMLPurifier_HTMLDefinition->doSetup(Object(HTMLPurifier_Config))
#7 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/Config.php(497): HTMLPurifier_Definition->setup(Object(HTMLPurifier_Config))
#8 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/Config.php(415): HTMLPurifier_Config->getDefinition('HTML', false, false)
#9 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier/Generator.php(74): HTMLPurifier_Config->getHTMLDefinition()
#10 /home/accoagok/public_html/system/3rd_party/HTMLPurifier/HTMLPurifier.php(158): HTMLPurifier_Generator->__construct(Object(HTMLPurifier_Config), Object(HTMLPurifier_Context))
#11 /home/accoagok/public_html/system/Text/Parser.php(199): HTMLPurifier->purify('<p>\r\n\thelp\r\n</p...')
#12 /home/accoagok/public_html/system/Helpers/Form/Editor.php(379): IPS\Text\_Parser->parse('<p>\r\n\thelp\r\n</p...')
#13 /home/accoagok/public_html/system/Helpers/Form/FormAbstract.php(162): IPS\Helpers\Form\_Editor->getValue()
#14 /home/accoagok/public_html/system/Helpers/Form/Editor.php(492): IPS\Helpers\Form\_FormAbstract->setValue(true, false)
#15 /home/accoagok/public_html/system/Helpers/Form/FormAbstract.php(142): IPS\Helpers\Form\_Editor->setValue(true)
#16 /home/accoagok/public_html/system/Helpers/Form/Editor.php(185): IPS\Helpers\Form\_FormAbstract->__construct('support_content', NULL, true, Array, '\\IPS\\Helpers\\Fo...', NULL, NULL, 'support_content...')
#17 /home/accoagok/public_html/system/Content/Item.php(700): IPS\Helpers\Form\_Editor->__construct('support_content', NULL, true, Array, '\\IPS\\Helpers\\Fo...', NULL, NULL, 'support_content...')
#18 /home/accoagok/public_html/applications/nexus/sources/Support/Request.php(442): IPS\Content\_Item::formElements(NULL, NULL)
#19 /home/accoagok/public_html/system/Content/Item.php(152): IPS\nexus\Support\_Request::formElements(NULL, NULL)
#20 /home/accoagok/public_html/system/Content/Item.php(102): IPS\Content\_Item::buildCreateForm(NULL)
#21 /home/accoagok/public_html/applications/nexus/modules/front/support/home.php(87): IPS\Content\_Item::create()
#22 /home/accoagok/public_html/system/Dispatcher/Controller.php(85): IPS\nexus\modules\front\support\_home->create()
#23 /home/accoagok/public_html/applications/nexus/modules/front/support/home.php(38): IPS\Dispatcher\_Controller->execute()
#24 /home/accoagok/public_html/system/Dispatcher/Dispatcher.php(152): IPS\nexus\modules\front\support\_home->execute()
#25 /home/accoagok/public_html/index.php(13): IPS\_Dispatcher->run()
#26 {main}

When someone tries to submit a support request they get this Error code: EX256

anyone now why?

It does not occur for admins, but all other groups it does

[7ekaJ 0]

edit: i found that it was occuring when trying to submit any content with a text box, including threads etc. It does not happen for admins

can anyone help?