TYPO3 Exception 1316104317

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.

General TYPO3 troubleshooting tips can be found in the section “Troubleshooting” of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms.

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The default controller for extension “…” and plugin “…” can not be determined.

Basic requirements

This basically means that you need to define a controller in your ext_localconf.php. Usually the first entry is taken as default controller/action. Here’s an example:

Situation: Adding your plugin via TypoScript

This error can appear if you got your TypoScript wrong. Make sure that you write your settings with the first letter in uppercase and double-check your ext_localconf.php.

lib.test = USER_INT
lib.test {
  # Calling the extbase bootstrapper
  userFunc = TYPO3\CMS\Extbase\Core\Bootstrap->run

  # Upper camel case!
  extensionName = YourExt
  vendorName = YourVendor

  # As you set it in \TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin
  pluginName = Pi1
}

Situation: Adding the Plugin via FlexForm Plugin

Extbase has the possibility to override internal configuration from FlexForms. This error might appear if you change a plugin from different types.

Try deleting the plugin instance and add a new one, or clear tt_content.pi_flexform field for current plugin, to avoid wrong switchableControllerActions from FlexForm.