Then I manually put the necessary .htaccess codes by referring W3Total, "Install" guide. My VPS doesn't use any minify mod (like google pagespeed mod), it only use Apache (backend) and Nginx (front-end). However, still I can't fix this issue. So what could be the reason and how do I fix this issue?
After I enabled, minify debug. Now it shows following error.
W3 Total Cache error: It appears Page Cache URL rewriting is not working. Please verify that the server configuration allows .htaccess
Unfortunately disk enhanced page caching will not function without custom rewrite rules. Please ask your server administrator for assistance. Also refer to the install page for the rules for your server. Technical info .htaccess file contains rules to rewrite url http :// www. mydomain. com/w3tc_rewrite_test into http :// www. mydomain . com/?w3tc_rewrite_test which, if handled by plugin, return "OK" message. The plugin made a request to http :// www. mydomain .com/w3tc_rewrite_test but received: 404 Not Found instead of "OK" response.
Note! I can't post more than 2 links, therefore I added a space between www, .com and http