The xposed framework is not installed

After downloading the xposed installer, click the frame and the prompt is as follows:

The Xposed framework is not installed. Please download the latest ZIP file frome XDA and flash it manually via recovery.

My system version is 4.4, and the xposed installer version is 3.0. The prompt information is as above.

The reason is that for Android systems below 5.0, the required xposed installer version is 2.7 or below. The newly downloaded version 2.7 is installed successfully.