I have added following to the serverblock
#---- flynax rewrite section start ---- #
#non last slash redirect
rewrite ^([^\.]*[^/])$ $1/ permanent;



if (!-e $request_filename)
{
#define paging
rewrite ^/([^/]*)/((.*)/)?(index([0-9]*).ht(m?ml?))?$ /index.php?page=$1&rlVareables=$3&pg=$5 last;

#define listing details
rewrite ^/([^/]*)/((.*)/)?(.+)-l?([0-9]+).ht(m|ml)$ /index.php?page=$1&rlVareables=$3&listing_id=$5 last;

#define browse
rewrite ^/([^/]*)/(.*)(\.html|\.htm|\/)$ /index.php?page=$1&rlVareables=$2 last;

#define single pages
rewrite ^/(.+)(\.html|\.htm|\/)$ /index.php?page=$1 last;

#sitemap rewrite rules
rewrite ^/([a-z_]*)?sitemap([0-9]*).xml$ /plugins/sitemap/sitemap.php?search=google&number=$2&mod=$1 last;
}
#---- flynax rewrite section end ---- #


I still get 500 error
Log entries show following. Please help

2024-04-23 00:17:08
47.128.26.249 - - [22/Apr/2024:14:17:08 +0000] "GET /australia/queensland/nobby/classifieds/car-service-repair/ 2.0" 500 0 "-" "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)"
2024-04-23 00:17:16
47.128.44.7 - - [22/Apr/2024:14:17:16 +0000] "GET /australia/queensland/tansey/classifieds/car-service-repair/ 2.0" 500 0 "-" "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)"
2024-04-23 00:20:20
139.218.32.18 - - [22/Apr/2024:14:20:20 +0000] "GET /admin/ 2.0" 500 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36"
2024-04-23 00:20:21
139.218.32.18 - - [22/Apr/2024:14:20:21 +0000] "GET /admin/ 2.0" 500 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36"
2024-04-23 00:20:22
139.218.32.18 - - [22/Apr/2024:14:20:22 +0000] "GET /admin/ 2.0" 500 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36"