What is the correct way to write this in .htaccess?

Question

PHP

There are 2 different directories with different .htaccess files in each:

.htaccess #1:

# BEGIN [SEO_REDIRECTION]
 ErrorDocument 404 /index.php?error=404 
# END [SEO_REDIRECTION]

# 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

.htaccess #2:

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d


RewriteCond $1 !^(redirect\.php)
RewriteRule ^(.*)$ redirect.php?l=$1 [L]

There was a need to combine them into one, but if I just "glue" the contents of .htaccess, then nothing works. I tried to remove various lines, but nothing came out anyway. I apologize for the crooked code, I'm a noob.

Answer 1

The problem was solved by changing the type of links in Wordpress.
After that, the engine itself changed its .htaccess:

# BEGIN [SEO_REDIRECTION]
 ErrorDocument 404 /index.php?error=404 
# END [SEO_REDIRECTION]

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d


RewriteCond $1 !^(redirect\.php)
RewriteRule ^(.*)$ redirect.php?l=$1 

# BEGIN WordPress

# END WordPress

And everything began to work like clockwork.

Answer 2

https://jsconsole.com/