If releasing an ext key, a page not found is triggered.
url: https://extensions.typo3.org/my-extensions/?tx_terfe2_pi1%5Bextension%5D=17701&tx_terfe2_pi1%5Baction%5D=delete&tx_terfe2_pi1%5Bcontroller%5D=Registerkey&cHash=00b2239ddfc3cf0cf497628337953dda