Website giving me 500 internal server error - is it .htaccess error?

Question

My website is giving a 500 internal server error when I click on any category header menu, but the homepage is loading fine. I did some troubleshooting, but from my understanding it narrows down to .htaccess rewrite rules.

Here is my .htaccess code, I need help with this please: My .htaccess code:

# BEGIN WordPress

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

Answer 1

You can replace your .htaccess file with this:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Troubleshooting 500 internal server error

1. Go FTP into your website
2. Open the file named wp-config.php
3. Find the line where you see define('WP_DEBUG', false);
4. Change false to true and save the file

Now you check..