Common Issues

"&cHash empty" issue

Request parameters could not be validated (&cHash empty)

If you are receiving such TYPO3's error when trying to access endpoints potential reasons could be:

• t3api version lower than 2.1.
• TYPO3 global configuration or one of the installed extensions is resetting cacheHash.excludedParameters value. Check if t3apiResource is inside collection of excluded parameters defined in $GLOBALS['TYPO3_CONF_VARS']['FE']['cacheHash']['excludedParameters']. Such value is added by t3api core so you should use merge excludedParameters instead of override.