Title: Got Error HTTP Error 500 Last modified: June 17, 2019 --- # Got Error HTTP Error 500 * Resolved [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/) * Dear, I have installed the Autoptimize and enable it, then I have got HTTP error 500. I have previously used the wp super cache plugin. Now please suggest me the way to use both the plugins… Viewing 15 replies - 1 through 15 (of 21 total) 1 [2](https://wordpress.org/support/topic/got-error-http-error-500/page/2/?output_format=md) [→](https://wordpress.org/support/topic/got-error-http-error-500/page/2/?output_format=md) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645158) * Afternoon webdoc121; I use WP Super Cache myself, should work perfecty with AO. Can you try if disabling CSS or JS or HTML or Image optimization makes the server error go away? * frank * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645378) * If I disable the minifying of CSS, JS or HTML, then it would not fulfill the purpose I am installing the Autoptimize * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645421) * the goal of disabling those is trying to understand what is going on so we can find a solution webdoc121 🙂 * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645428) * Ok. Understand…. 🙂 * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645444) * I have disabled all the three and website is working now. Now please suggest me the procedure * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11645558) * OK, now enable them one at a time to see which one causes things to break? * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647373) * Ok. Will let you know. ASAP… * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647398) * Dear, I have tests disabling and enabling the plugin Options: Here’s what I have done so far: * 1) Enabling the Plugin with all the options enabled: Causing 500 http error * 2) Disabling CSS, HTML, JS and Image Optimization: Website Runs * 3) Enabling JS: Website Runs * 4) Enabling HTML: Website Runs * 5) Enabling Image Optimization: Website Runs * 6) Enabling CSS: Causing 500 http error * 7) Disabling CSS: Still the same error * 8) Disabling Image: Still the same error * 9) Disabling HTML: Website Runs * Now Please analyze and suggest me which area is wrong… * Regards… * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647543) * OK, let’s focus on just CSS now; 1. if only CSS optimization is active do you have the server error? 2. What happens if you untick the “aggregate CSS”-option? 3. What happens if you add `themes` or `plugins` to the comma-separated CSS optimization list? * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647557) * 1. if only CSS optimization is active do you have the server error? : YES Causing http error 500 * 2. What happens if you untick the “aggregate CSS”-option? : Still the Same Error * 3. What happens if you add themes or plugins to the comma-separated CSS optimization list? : Still the same error * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647568) * OK, so what other plugins do you have active? * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647576) * 1. For Optimization: I have used the Wp Super Cache and Wp-Optimize * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647664) * and others (not for optimization)? * Thread Starter [webdoc121](https://wordpress.org/support/users/webdoc121/) * (@webdoc121) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647687) * Dear, this is a huge list. Do you want all the plugins? * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/#post-11647696) * in that case maybe first and foremost; can you check your PHP-errorlog for errors? Viewing 15 replies - 1 through 15 (of 21 total) 1 [2](https://wordpress.org/support/topic/got-error-http-error-500/page/2/?output_format=md) [→](https://wordpress.org/support/topic/got-error-http-error-500/page/2/?output_format=md) The topic ‘Got Error HTTP Error 500’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 21 replies * 2 participants * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * Last activity: [6 years, 11 months ago](https://wordpress.org/support/topic/got-error-http-error-500/page/2/#post-11648805) * Status: resolved