How to solve CORS error?

I found this artical:
"Enabling CORS for one or more containers in docker-letsencrypt-nginx-proxy-companion"
url：https://stackoverflow.com/questions/63159423/enabling-cors-for-one-or-more-containers-in-docker-letsencrypt-nginx-proxy-compa

but I can't solve my problem, it still shows the CORS error

Please help me to solve this problem, many thanks

testserver_include.conf：

location ~ ^/Crontab/.*$ {
allow 127.0.0.1;
allow "myip";
deny all;
break;
include /home/bryant/nginx/cors-setting.conf;
}

location ~ [^/].php(/|$) {
# limit_req zone=one burst=10;
include /home/bryant/nginx/cors-setting.conf;
fastcgi_connect_timeout 1800;
fastcgi_send_timeout 1800;
fastcgi_read_timeout 1800;
fastcgi_split_path_info ^(.+?.php)(/.*)$;
try_files $uri $uri/ 404;
fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
include /etc/nginx/fastcgi.conf;

fastcgi_param PATH_INFO       $fastcgi_path_info;
fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include /etc/nginx/fastcgi_params;

}

location /Images/ {
expires 1y;
add_header Pragma public;
break;
include /home/bryant/nginx/cors-setting.conf;
}

location /Files/ {
if ($args) {
add_header Content-disposition "attachment; filename=$1";
}
include /home/bryant/nginx/cors-setting.conf;
}

location /HCTLabelImages/ {
include /home/bryant/nginx/cors-setting.conf;
}

location /Excel/ {
include /home/bryant/nginx/cors-setting.conf;
}

location / {
include /home/bryant/nginx/cors-setting.conf;
proxy_redirect off;
proxy_set_header Host $host;
# proxy_set_header X-Real-IP $remote-addr;
proxy_set_header X-Forwarded-For
$proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_read_timeout 1m;
proxy_connect_timeout 1m;
proxy_pass http://127.0.0.1:3336;
expires 1y;
}

location ~* .(jpg|jpeg|png|gif|ico|css|js|map)$ {
break;
}

location ~* .(eot|ttf|woff|woff2)$ {
add_header Access-Control-Allow-Origin *;
}

cors-setting.conf

if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
add_header 'Content-Type' 'text/plain; charset=utf-8';
add_header 'Content-Length' 0;
return 204;
}

if ($request_method = 'POST') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
}

if ($request_method = 'GET') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
}