TYPO3 Exception 1313855175

Note

Below, the TYPO3 community may have provided additional information or solutions for this exception. However, these may or may not apply to your particular case. If you can provide more information, you should come back here and add your experience and solution steps to this issue once you have resolved it.

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The action “…” is not allowed by this plugin.

\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
    '<ExtensionName>,
    '<PluginName>',
    [
        \Vendor\ExtensionName\Controller\YourController::class => 'yourAction',
    ],
    // non-cacheable actions
    [

    ]
);

or as of extbase 4.7 you need to update your FlexForm with all necessary actions (semicolon separated) in case you use switchableControllerActions:

Note

As of TYPO3 10.3 switchable controller actions are deprecated. For details, please see https://docs.typo3.org/c/typo3/cms-core/10.4/en-us/Changelog/10.3/Deprecation-89463-SwitchableControllerActions.html

<switchableControllerActions>
  <TCEforms>
    <label>LLL:EXT:kofomi/Resources/Private/Language/locallang_be.xml:flexforms_general.mode</label>
    <onChange>reload</onChange>
    <config>
      <type>select</type>
      <items>
        <numIndex index="0">
          <numIndex index="0">LLL:EXT:kofomi/Resources/Private/Language/locallang_be.xml:flexforms_general.mode.eventgroups</numIndex>
          <numIndex index="1">Events->list;Events->show</numIndex>
        </numIndex>
        <numIndex index="1">
          <numIndex index="0">LLL:EXT:kofomi/Resources/Private/Language/locallang_be.xml:flexforms_general.mode.persons</numIndex>
          <numIndex index="1">Persons->list;Persons->show</numIndex>
        </numIndex>
      </items>
    </config>
  </TCEforms>
</switchableControllerActions>

or

If you tried using FlexForms with switchableControllerAction this overwrites your ext_localconf.php even if you delete the Flexform and the link in your ext_tables.php. To work with your extension again edit the table tt_content and search for switchableControllerAction in the column pi_flexform and delete the content of this field and everything works fine again without FlexForm.

Another issue that can occur is an issue with realurl configuration. It may pass action params as uppercase e.g. ‘Show’ instead of ‘show’. Either fix the realurl configuration or allow actions in uppercase.

Also, as developer if you changed the FlexForm above, remember to change the plugin configuration on the referencing page as well. The page configuration overrides the plugin configuration and will still have the old (now invalid) value stored.