wordpress sub-category ( lowercase letters + non-latin characters ) = 404

Question

If the sub-category's slug is a combination of lowercase letters and Korean, page 404 appears.

1 : NGINX settings

location / {
    try_files $uri $uri/ /index.php?$args;
}

2 : Wordpress - Permerlink settings

• Custom: /%category%/%postname%/
• Category Base:.

3 : Wordpress - Yoast

• Taxonomies > Category URLs ( Remove )

4 : Tested content

4-1 : In case of parent category ✅

• mywebsite.com/한글 = 200
• mywebsite.com/a한글 = 200
• mywebsite.com/한글B = 200

4-2 : In case of post ✅

• mywebsite.com/한글/post글 = 200 ( lowercase + non-latin )

4-3 : In case of child category ⚠️

• mywebsite.com/한글/한글 = 200
• mywebsite.com/한글/a한글 = 404 ❌
• mywebsite.com/한글/한글b = 404 ❌
• mywebsite.com/한글/C한글 = 200
• mywebsite.com/한글/한글D = 200
• mywebsite.com%2F%ED%95%9C%EA%B8%80%2Fa%ED%95%9C%EA%B8%80 = 200 ⭕️ ( /한글/a한글 : url encoded )
• mywebsite.com/한글/A한글 = 200 ⭕️ ( /한글/a한글 : uppercase )

5 : Reference question

https://wordpress.stackexchange.com/questions/277401/arabic-characters-in-url-returns-404-error

I think it might be related to @user139986 's answer.

I don't know how to handle this problem .. 😭

Answer 1

⚠️ Temporary workaround

https://stackoverflow.com/a/59109698/15497563

sudo apt-get install nginx-extras

nginx.conf

https://stackoverflow.com/a/11170826/15497563

http {
    # Include the perl module
    perl_modules perl/lib;

    # Define this function
    perl_set $uri_uppercase 'sub {
        my $r = shift;
        my $uri = $r->uri;
        $uri = uc($uri);
        return $uri;
    }';
}

site-enabled

https://stackoverflow.com/a/35369570/15497563

server {
    location ~ ^/(부모/자식a|부모/자식b|부모/자식c)(.*) {
        rewrite ^(.*)$ $scheme://$host$uri_uppercase;
    }
}

Every time you create a sub-category(lowercase letters + non-latin characters), you need to edit it...