TYPO3 Exception 1237823695


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Register arguments of viewhelpers describes how to register own Arguments for viewHelpers. Never denying that I might have made a fault I never had success with the simple notation by using several parameters in the render-function. I succeeded with the solution to register the arguments in the function initializeArguments() which is automatically called if present in the viewHelper.


The error shown is “Argument “xmlns:f” was not registered”.

PHPStorm sometimes adds a xmlns attribute to the very first tag in a Fluid Template, if you use auto completion (eg. type in »f:comm« and hit enter to autocomplete to »<f:comment></f:comment>«). If the first tag in your template happens to be a Fluid tag, then the Fluid parser will throw the execption, that »xmlns« is in fact not a valid attribute of the current Fluid tag.

Issue on Forge: https://forge.typo3.org/issues/56481

Solution 1 - Remove the attribute

Just remove the wrong xmlns attribute from your Fluid tag

Wrong (xmlns isn't a valid attribute for this tag):
<f:layout name="Page/Homepage" xmlns:f="http://www.w3.org/1999/html"/>

<f:layout name="Page/Homepage" />

Solution 2 - Register the namespace

PHPStorm needs to know about the fluid namespace, then it will not add those attributes by itself anymore. Wrap your template into a DIV like this:

<div xmlns="http://www.w3.org/1999/xhtml" lang="en"

    <!-- Fluid goes here -->


See http://buzz.typo3.org/teams/extbase/article/howto-autocompletion-for-fluid-in-phpstorm/ & https://fluidtypo3.org/documentation/templating-manual/appendix/fluid-autocompletion.html

Fluid 6.1 select ViewHelper

Argument "prependContent" was not registered

<f:form.select name="formtype" options="{formtype}" optionLabelField="title" prependContent="TRUE">

<option value="0">--please choose--</option>



If you get this problem in the “news” extensions, it might be linked to the viewhelper => “hsc”. Try with the original template form the extension.


After update of roq_newsevent, (or for no apparent reason) the error appears in relation with roq_newsevent template : /Partials/EventList/item.html

The viewhelper linking to single view have to be updated :

Original version : <e:link newsItem=”{newsItem}” settings=”{settings}” action=”eventDetail”>{newsItem.title}</e:link>

Updated and working version : <n:link newsItem=”{newsItem}” settings=”{settings}”>{newsItem.title}</n:link>

See on TYPO3 Forge here : https://forge.typo3.org/issues/53921

Upgrade to TYPO3 7.6.2

The Extension Manager does not work and gives this error message:

Uncaught TYPO3 Exception
#1237823695: Argument "jQueryNamespace" was not registered. (More information)
TYPO3\CMS\Fluid\Core\Parser\Exception thrown in file
/var/www/html/developer/typo3_src-7.6.2/typo3/sysext/fluid/Classes/Core/Parser /TemplateParser.php in line 604.
19 TYPO3\CMS\Fluid\Core\Parser \TemplateParser::abortIfUnregisteredArgumentsExist(array, array)
00563:         // The following three checks are only done *in an uncached template*, and not needed anymore in the cached version
00564:         $expectedViewHelperArguments = $viewHelper->prepareArguments();
00565:         $this->abortIfUnregisteredArgumentsExist($expectedViewHelperArguments, $argumentsObjectTree);
00566:           $this->abortIfRequiredArgumentsAreMissing($expectedViewHelperArguments, $argumentsObjectTree);
00567:         $this->rewriteBooleanNodesInArgumentsObjectTree($expectedViewHelperArguments, $argumentsObjectTree);

Solution: Start the Install Tool and press the button “Clear all cache”.

Removal of deprecated code in sysext fluid

See Breaking: #53542 - Removal of deprecated code in sysext fluid

For example: f:be.container arguments

Error Argument “addCssFile” was not registered

Use includeCssFiles instead of addCssFile and adapt value from string to array