apache - .htaccess中对RewriteRule的更改未生效

I am using WAMP and I want to remove index.php from my url and I used this code:

<IfModule mod_rewrite.c>
        RewriteEngine On
        RewriteBase /

        # Removes index.php from ExpressionEngine URLs
        RewriteCond %{THE_REQUEST} ^GET.*index\.php [NC]
        RewriteCond %{REQUEST_URI} !/system/.* [NC]
        RewriteRule (.*?)index\.php/*(.*) /$1$2 [R=301,NE,L]

        # Directs all EE web requests through the site index file
        RewriteCond %{REQUEST_FILENAME} !-f
        RewriteCond %{REQUEST_FILENAME} !-d
        RewriteRule ^(.*)$ /index.php/$1 [L]
</IfModule>

Then I had to change two lines as I moved my files to sub-directory OOP-Project from:

RewriteRule (.*?)index\.php/*(.*) /$1$2 [R=301,NE,L]

and

RewriteRule ^(.*)$ /index.php/$1 [L]

to:

RewriteRule (.*?)index\.php/*(.*) OOP-Project/$1$2 [R=301,NE,L]

and

RewriteRule ^(.*)$ OOP-Project/index.php/$1 [L]

But, the changes are not taking effect although first time it worked! I tried adding syntax error and it showed the error. Surprisingly, when I moved my files to another folder say OOP-Project-1, it worked. I did a lot of research and found this Changes to RewriteRule in .htaccess not taking effect But it didn't address the problem correctly.

Hope someone helps!