您需要将文件 FIRST_INSTALL 设置到您的 DocRoot 文件夹中，该文件夹似乎是一个文件夹.该文件不应位于 Typ3 文件夹中.

You need to set the file FIRST_INSTALL into your DocRoot folder, which seems to be one folder up. The file shouldn't be situated in the typo3 folder.