The application and system folders cannot be accessed locally in the ci framework

This is the first time I use the ci framework. The local test found that the application and system directories in the framework cannot be accessed. It shows 403 Access to Directory Forbidden. Other files under this domain name can be accessed normally. What is the problem? Is there a problem with computer permissions?

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This is the first time I use the ci framework. The local test found that the application and system directories in the framework cannot be accessed. It shows 403 Access to Directory Forbidden. Other files under this domain name can be accessed normally. What is the problem? Is there a problem with computer permissions?

For security reasons, there are .htaccess files under the application and system directories, making these two folders inaccessible.