Hello,
I have a problem installing php v7.3.
The installation process went well.
However, the problem I experienced when trying to make settings in the settings menu.
Some of the obstacles that occur are as follows:
- When opening the Install extensions menu in PHP, it doesn't appear at all or you could say it's blank as shown in the following image:

- An error occurred when opening the Session configuration menu as follows:

- The same thing also error occurred when opening the phpinfo menu as follows:

Can't be used because php v7.4 is already installed or is there something else that causes this?
please provide information, instructions and assistance.