Wordpress LScache Plugin: 500 error keep on coming Even if cache is purged.
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hi There, So I have a client who reports us about his site getting crashed due to our plugin. When I debugged about the issue, I am able to figure out a very strange behavior on the site. The home page sometime shows 500 internal server error and keep on showing dead pages until we disable Lite Speed cache from the admin menu. On the private mode it server the page with cache and when I purge the cache it shows the recent one without any issue. So it is quite clear that issue about the 500 pages occurs only for the Logged In users. Even if I remove our plugin completely from the site & purge cache the behavior is still the same as I described. I am providing you the system report here as I am not able to get any report number when I click Send to LiteSpeed . Here are the two videos that we made that could help your understanding the issue better. Video #1: https://www.dropbox.com/s/xcnivmec89uadzd/2018-01-05_13-05-18.mp4?dl=0 Video #2: https://www.dropbox.com/s/s3tfewf2rf3prbh/2018-01-05_13-09-58.mp4?dl=0 Server Variables SERVER_SOFTWARE = LiteSpeed DOCUMENT_ROOT = /home/chasethe/public_html X-LSCACHE = on LSWCP_TAG_PREFIX = b95 Wordpress Specific Extras wordpress version = 4.9.1 siteurl = https://chasethelifeyoulove.com home = https://chasethelifeyoulove.com home_url = https://chasethelifeyoulove.com locale = en_US active theme = X active plugins = array ( 0 => query-monitor/query-monitor.php, 1 => connects-mailchimp/connects-mailchimp.php, 2 => contact-form-7-mailchimp-extension/cf7-mch-ext.php, 3 => contact-form-7-success-page-redirects/cf7-success-page-redirects.php, 4 => contact-form-7/wp-contact-form-7.php, 5 => convertplug/convertplug.php, 6 => cornerstone/cornerstone.php, 7 => force-regenerate-thumbnails/force-regenerate-thumbnails.php, 8 => instagram-feed/instagram-feed.php, 9 => jetpack/jetpack.php, 10 => litespeed-cache/litespeed-cache.php, 11 => mailchimp-for-woocommerce/mailchimp-woocommerce.php, 12 => p3-profiler/p3-profiler.php, 13 => printful-shipping-for-woocommerce/printful-shipping.php, 14 => recent-posts-widget-extended/rpwe.php, 15 => revslider/revslider.php, 16 => tco-email-forms/tco-email-forms.php, 17 => tco-google-analytics/tco-google-analytics.php, 18 => tco-white-label/tco-white-label.php, 19 => tco-woo-checkout-editor/tco_woo_checkout_manager.php, 20 => woocommerce-gateway-stripe/woocommerce-gateway-stripe.php, 21 => woocommerce-mailchimp/woocommerce-mailchimp.php, 22 => woocommerce-services/woocommerce-services.php, 23 => woocommerce/woocommerce.php, 24 => wordpress-seo/wp-seo.php, 25 => wp-php-console/wp-php-console.php, 26 => wpide/WPide.php, ) LSCache Plugin Options version = 1.7.1.1 radio_select = 1 purge_upgrade = true cache_priv = true cache_commenter = true cache_rest = true cache_page_login = true timed_urls = timed_urls_time = cache_favicon = true cache_resources = true mobileview_enabled = false mobileview_rules = cache_uri_priv = cache_browser = false cache_browser_ttl = 2592000 login_cookie = check_advancedcache = true use_http_for_https_vary = false debug = 2 admin_ips = 27.56.190.198 debug_level = true log_file_size = 3 heartbeat = true debug_cookie = false collaps_qs = false log_filters = false log_ignore_filters = gettext gettext_with_context get_the_terms get_term log_ignore_part_filters = i18n locale settings option public_ttl = 604800 private_ttl = 1800 front_page_ttl = 604800 feed_ttl = 0 403_ttl = 3600 404_ttl = 3600 500_ttl = 0 purge_by_post = A.F.H.M.PGS.PGSRP.PT.T excludes_uri = excludes_qs = ?xl=nocache excludes_cat = excludes_tag = css_minify = false css_combine = false css_combined_priority = false css_http2 = false css_exclude = js_minify = false js_combine = false js_combined_priority = false js_http2 = false js_exclude = optimize_ttl = 604800 html_minify = false optm_qs_rm = false optm_ggfonts_rm = false optm_css_async = false optm_js_defer = false optm_emoji_rm = false optm_excludes = optm_exclude_jquery = true optm_ggfonts_async = false optm_max_size = 1.2 optm_rm_comment = true cdn = false cdn_ori = cdn_exclude = cdn_remote_jquery = 0 media_img_lazy = false media_img_lazy_placeholder = media_iframe_lazy = false media_img_optm_cron_off = false media_img_webp = false media_img_webp_only = false media_img_exif = false media_img_webp_lossless = false hash = tAfJ20BXdOp05jzZJ5gCjPVBp9pPkKML nocache_cookies = nocache_useragents = crawler_include_posts = true crawler_include_pages = true crawler_include_cats = true crawler_include_tags = true crawler_excludes_cpt = crawler_order_links = date_desc crawler_usleep = 500 crawler_run_duration = 400 crawler_run_interval = 600 crawler_crawl_interval = 302400 crawler_threads = 3 crawler_load_limit = 1 crawler_domain_ip = crawler_custom_sitemap = crawler_cron_active = false esi_enabled = false esi_cached_admbar = true esi_cached_commform = true wc_update_interval = 0 wc_shop_use_front_ttl = true woo_cache_cart = true /home/chasethe/public_html/.htaccess contents: # BEGIN LSCACHE ## LITESPEED WP CACHE PLUGIN ? Do not edit the contents of this block! ## RewriteEngine on CacheLookup on RewriteRule . ? [E=Cache-Control:no-autoflush] RewriteRule min/ w+ .(css|js) ? [E=cache-control:no-vary] ### marker CACHE RESOURCE start ### RewriteRule wp-content/. /[^/] (responsive|css|js|dynamic|loader|fonts) .php ? [E=cache-control:max-age=3600] ### marker CACHE RESOURCE end ### ### marker FAVICON start ### RewriteRule favicon .ico$ ? [E=cache-control:max-age=86400] ### marker FAVICON end ### ## LITESPEED WP CACHE PLUGIN ? Do not edit the contents of this block! ## # END LSCACHE # BEGIN WordPress RewriteEngine On RewriteBase / RewriteRule ^index .php$ ? [L] RewriteCond % REQUEST_FILENAME !-f RewriteCond % REQUEST_FILENAME !-d RewriteRule . /index.php [L] # END WordPress Here are the logs that I generated by error logging when the issue occurs. 01/05/18 08:01:01.222 [27.56.190.198:57854 1 Hw0] CHK html bypass: miss footer const 01/05/18 08:01:01.222 [27.56.190.198:57854 1 Hw0] not cacheable before ctrl finalize 01/05/18 08:01:01.223 [27.56.190.198:57854 1 Hw0] Router: get_uid: 4 LSC_Router::get_uid()@40 LSC_Vary->_finalize_default_vary()@303 LSC_Vary->_update_default_vary()@273 LSC_Vary->_finalize()@476 01/05/18 08:01:01.223 [27.56.190.198:57854 1 Hw0] Router: get_role: administrator 01/05/18 08:01:01.223 [27.56.190.198:57854 1 Hw0] Config: role in vary_group [group] 99 01/05/18 08:01:01.223 [27.56.190.198:57854 1 Hw0] Vary: show_admin_bar_front: true 01/05/18 08:01:01.223 [27.56.190.198:57854 1 Hw0] Vary: admin bar : true 01/05/18 08:01:01.224 [27.56.190.198:57854 1 Hw0] Vary: no custimzed vary 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] X-LiteSpeed-Cache-Control: no-cache 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] CHK html bypass: miss footer const 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] Media bypass: Not frontend HTML type 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] GUI bypassed by no counter 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] Optimizer bypass: Not frontend HTML type 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] CDN bypass 01/05/18 08:01:01.227 [27.56.190.198:57854 1 Hw0] End response ??????????????????????????? 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] POST HTTP/1.1 /wp-admin/admin-ajax.php 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] Query String: 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] Accept Encoding: gzip, deflate, br 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:02.164 [27.56.190.198:57854 1 IT5] X-LSCACHE: true 01/05/18 08:01:03.017 [27.56.190.198:57854 1 IT5] Media init 01/05/18 08:01:03.028 [27.56.190.198:57854 1 IT5] X Cache_control -> private ( logged in user ) 01/05/18 08:01:03.030 [27.56.190.198:57854 1 IT5] CDN init 01/05/18 08:01:03.031 [27.56.190.198:57854 1 IT5] Task init 01/05/18 08:01:03.033 [27.56.190.198:57854 1 IT5] LSCWP_CTRL bypassed empty 01/05/18 08:01:03.164 [27.56.190.198:57854 1 IT5] CHK html bypass: miss footer const 01/05/18 08:01:03.164 [27.56.190.198:57854 1 IT5] not cacheable before ctrl finalize 01/05/18 08:01:03.164 [27.56.190.198:57854 1 IT5] Router: get_uid: 4 LSC_Router::get_uid()@40 LSC_Vary->_finalize_default_vary()@303 LSC_Vary->_update_default_vary()@273 LSC_Vary->_finalize()@476 01/05/18 08:01:03.164 [27.56.190.198:57854 1 IT5] Router: get_role: administrator 01/05/18 08:01:03.164 [27.56.190.198:57854 1 IT5] Config: role in vary_group [group] 99 01/05/18 08:01:03.165 [27.56.190.198:57854 1 IT5] Vary: show_admin_bar_front: true 01/05/18 08:01:03.165 [27.56.190.198:57854 1 IT5] Vary: admin bar : true 01/05/18 08:01:03.165 [27.56.190.198:57854 1 IT5] Vary: no custimzed vary 01/05/18 08:01:03.168 [27.56.190.198:57854 1 IT5] X-LiteSpeed-Cache-Control: no-cache 01/05/18 08:01:03.168 [27.56.190.198:57854 1 IT5] CHK html bypass: miss footer const 01/05/18 08:01:03.168 [27.56.190.198:57854 1 IT5] Media bypass: Not frontend HTML type 01/05/18 08:01:03.169 [27.56.190.198:57854 1 IT5] GUI bypassed by no counter 01/05/18 08:01:03.169 [27.56.190.198:57854 1 IT5] Optimizer bypass: Not frontend HTML type 01/05/18 08:01:03.169 [27.56.190.198:57854 1 IT5] CDN bypass 01/05/18 08:01:03.169 [27.56.190.198:57854 1 IT5] End response ??????????????????????????? 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] GET HTTP/1.1 / 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] Query String: 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] Accept Encoding: gzip, deflate, br 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:03.754 [27.56.190.198:57854 1 bij] X-LSCACHE: true 01/05/18 08:01:04.568 [27.56.190.198:57854 1 bij] Media init 01/05/18 08:01:04.576 [27.56.190.198:57854 1 bij] X Cache_control -> private ( logged in user ) 01/05/18 08:01:04.577 [27.56.190.198:57854 1 bij] CDN init 01/05/18 08:01:04.577 [27.56.190.198:57854 1 bij] Task init 01/05/18 08:01:04.578 [27.56.190.198:57854 1 bij] LSCWP_CTRL bypassed empty 01/05/18 08:01:04.597 [27.56.190.198:57854 1 bij] GUI init 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] POST HTTP/1.1 /wp-admin/admin-ajax.php 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] Query String: 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] Accept Encoding: gzip, deflate, br 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:04.751 [27.56.190.198:57854 1 F9d] X-LSCACHE: true 01/05/18 08:01:05.910 [27.56.190.198:57854 1 F9d] Media init 01/05/18 08:01:05.926 [27.56.190.198:57854 1 F9d] X Cache_control -> private ( logged in user ) 01/05/18 08:01:05.928 [27.56.190.198:57854 1 F9d] CDN init 01/05/18 08:01:05.928 [27.56.190.198:57854 1 F9d] Task init 01/05/18 08:01:05.929 [27.56.190.198:57854 1 F9d] LSCWP_CTRL bypassed empty 01/05/18 08:01:06.206 [27.56.190.198:57854 1 bij] X Cache_control init on 01/05/18 08:01:07.645 [27.56.190.198:57854 1 bij] Footer hook called 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] POST HTTP/1.1 / 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] Query String: 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] Accept Encoding: gzip, deflate, br 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:10.278 [27.56.190.198:57854 1 L4i] X-LSCACHE: true 01/05/18 08:01:10.475 [27.56.190.198:57854 1 F9d] X Cache_control -> no Cache ( Admin page ) LSC_Control::set_nocache()@260 LSC_Admin->admin_init()@103 01/05/18 08:01:11.091 [27.56.190.198:57854 1 F9d] CHK html bypass: miss footer const 01/05/18 08:01:11.091 [27.56.190.198:57854 1 F9d] not cacheable before ctrl finalize 01/05/18 08:01:11.091 [27.56.190.198:57854 1 F9d] Router: get_uid: 4 LSC_Router::get_uid()@40 LSC_Vary->_finalize_default_vary()@303 LSC_Vary->_update_default_vary()@273 LSC_Vary->_finalize()@476 01/05/18 08:01:11.104 [27.56.190.198:57854 1 F9d] Router: get_role: administrator 01/05/18 08:01:11.104 [27.56.190.198:57854 1 F9d] Config: role in vary_group [group] 99 01/05/18 08:01:11.104 [27.56.190.198:57854 1 F9d] Vary: show_admin_bar_front: true 01/05/18 08:01:11.104 [27.56.190.198:57854 1 F9d] Vary: admin bar : true 01/05/18 08:01:11.104 [27.56.190.198:57854 1 F9d] Vary: no custimzed vary 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] X-LiteSpeed-Cache-Control: no-cache 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] CHK html bypass: miss footer const 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] Media bypass: Not frontend HTML type 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] GUI bypassed by no counter 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] Optimizer bypass: Not frontend HTML type 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] CDN bypass 01/05/18 08:01:11.107 [27.56.190.198:57854 1 F9d] End response ??????????????????????????? 01/05/18 08:01:12.517 [27.56.190.198:57854 1 L4i] Media init 01/05/18 08:01:12.536 [27.56.190.198:57854 1 L4i] X Cache_control -> private ( logged in user ) 01/05/18 08:01:12.538 [27.56.190.198:57854 1 L4i] CDN init 01/05/18 08:01:12.539 [27.56.190.198:57854 1 L4i] Task init 01/05/18 08:01:12.542 [27.56.190.198:57854 1 L4i] LSCWP_CTRL bypassed empty 01/05/18 08:01:12.546 [27.56.190.198:57854 1 L4i] GUI init 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] POST HTTP/1.1 /wp-admin/admin-ajax.php 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] Query String: 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] Accept Encoding: gzip, deflate, br 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:12.779 [27.56.190.198:57854 1 taD] X-LSCACHE: true 01/05/18 08:01:12.837 [27.56.190.198:57854 1 L4i] CHK html bypass: miss footer const 01/05/18 08:01:12.837 [27.56.190.198:57854 1 L4i] not cacheable before ctrl finalize 01/05/18 08:01:12.837 [27.56.190.198:57854 1 L4i] Router: get_uid: 4 LSC_Router::get_uid()@40 LSC_Vary->_finalize_default_vary()@303 LSC_Vary->_update_default_vary()@273 LSC_Vary->_finalize()@476 01/05/18 08:01:12.838 [27.56.190.198:57854 1 L4i] Router: get_role: administrator 01/05/18 08:01:12.838 [27.56.190.198:57854 1 L4i] Config: role in vary_group [group] 99 01/05/18 08:01:12.839 [27.56.190.198:57854 1 L4i] Vary: show_admin_bar_front: true 01/05/18 08:01:12.839 [27.56.190.198:57854 1 L4i] Vary: admin bar : true 01/05/18 08:01:12.840 [27.56.190.198:57854 1 L4i] Vary: no custimzed vary 01/05/18 08:01:12.846 [27.56.190.198:57854 1 L4i] X-LiteSpeed-Cache-Control: no-cache 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] CHK html bypass: miss footer const 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] Media bypass: Not frontend HTML type 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] GUI bypassed by no counter 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] Optimizer bypass: Not frontend HTML type 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] CDN bypass 01/05/18 08:01:12.847 [27.56.190.198:57854 1 L4i] End response ??????????????????????????? 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] POST HTTP/1.1 /wp-admin/admin-ajax.php 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] Query String: 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] User Agent: Mozilla/5.0 (X11 Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] Accept Encoding: gzip, deflate, br 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/05/18 08:01:13.683 [27.56.190.198:57854 1 Gpx] X-LSCACHE: true 01/05/18 08:01:14.390 [27.56.190.198:57854 1 taD] Media init 01/05/18 08:01:14.407 [27.56.190.198:57854 1 taD] X Cache_control -> private ( logged in user ) 01/05/18 08:01:14.409 [27.56.190.198:57854 1 taD] CDN init 01/05/18 08:01:14.410 [27.56.190.198:57854 1 taD] Task init 01/05/18 08:01:14.419 [27.56.190.198:57854 1 taD] LSCWP_CTRL bypassed empty 01/05/18 08:01:15.065 [27.56.190.198:57854 1 Gpx] Media init 01/05/18 08:01:15.086 [27.56.190.198:57854 1 Gpx] X Cache_control -> private ( logged in user ) 01/05/18 08:01:15.087 [27.56.190.198:57854 1 Gpx] CDN init 01/05/18 08:01:15.087 [27.56.190.198:57854 1 Gpx] Task init 01/05/18 08:01:15.095 [27.56.190.198:57854 1 Gpx] LSCWP_CTRL bypassed empty 01/05/18 08:01:15.214 [27.56.190.198:57854 1 taD] X Cache_control -> no Cache ( Admin page ) LSC_Control::set_nocache()@260 LSC_Admin->admin_init()@103 ttttThe page I need help with: https://chasethelifeyoulove.com/ , Hello, Any php errors in the log? If no, please create a ticket ( https://store.litespeedtech.com/store/clientarea.php ) (or send email to bug@litespeedtech.com) with your theme and plugins (you have some premium plugins) as attachment file. That way we can reproduce the problem. , Hi, @xlplugins Im going to mark this topic as resolved. If you are still having a problem, please follow Tishus instructions above to create a ticket, and wed be happy to help troubleshoot. Thanks! ]
LiteCache Rush: Speed comes from using less, not from doing it faster
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