500 Internal Server Error

nginx config
nginx version: nginx/1.24.0
built by gcc 11.4.1 20230605 (Red Hat 11.4.1-2) (GCC)
built with OpenSSL 3.0.7 1 Nov 2022
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --with-ld-opt=-Wl,-rpath,/usr/local/lib --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-http_ssl_module --with-file-aio --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_stub_status_module --with-mail --with-mail_ssl_module --with-file-aio --with-stream --with-stream_ssl_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --add-module=/root/src/BUILD/nginx-1.24.0/headers-more-nginx-module-0.37 --add-module=/root/src/BUILD/nginx-1.24.0/nginx-upload-module-2.3.0 --add-module=/root/src/BUILD/nginx-1.24.0/lua-nginx-module-0.10.26 --add-module=/root/src/BUILD/nginx-1.24.0/ngx_devel_kit-0.3.3 --add-module=/root/src/BUILD/nginx-1.24.0/ngx_http_geoip2_module-3.4 --add-module=/root/src/BUILD/nginx-1.24.0/njs-7133f0400019/nginx

     ```

set_by_lua_block $uuid {
if ngx.var.http_x_request_id == nil then
return uuid4.getUUID()
else
return ngx.var.http_x_request_id
end
}

nginx return 500.

Could you give me a suggestion?
Thanks

Start with the reported nginx configuration and the set_by_lua_block snippet, then inspect the nginx error log for the 500 response. Reproduce the configuration with the stated nginx and Lua module versions before investigating the request-ID variable and uuid4 call. Done means identifying a confirmed cause and documenting a reproducible fix or the missing information needed.