Wordpress LScache Plugin: Plugin Stopped Working, No Cache , No Image Optimization
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hello, The plugin stopped working. Version 3.5.0.2 On Cache tab: WARNING LSCache caching functions on this page are currently unavailable! To use the caching functions you must have a LiteSpeed web server or be using QUIC.cloud CDN. We had already signed up for QUIC.cloud CDN, long ago. Checking on the status it says OK. refreshing the domain key says its Approved . Report number: RWICZKHN Regards, Hi, I dont see this domain on QC CDN , it shows CDN Disabled for image optimization , it was due to WP REST API call blocked by cloudflare, please whitelist our IPs in CloudFlare firewall. https://quic.cloud/ips Best regards, Hi @CacheCrawler We looked at all the IP addresses you gave us (56) and none are being blocked by us on Cloudflare. We have also white listed all 56 addresses on Cloudlflare Firewall, see images below: https://imgur.com/a/TcwEULc https://imgur.com/a/a8kEwLe We only see one IP as being active from the white list, see images below https://imgur.com/a/hAtaNym https://imgur.com/a/uZghbFC We also tried cleaning up unfinished data, and also manually gathered image data. We still dont have image optimization. Regards, Hi, Could you please clean up unfinished data and re-send request ? I dont see anything in log at this moment , but your next request should show up Best regards, Hi @CacheCrawler Cleaned Up Unfinished Data and re-sent the request Response : Pushed 43 images to Cloud server, accepted 43 images . But no image optimization showing up. Regards Hi, from log I am seeing blocked by CF at least, or even possibly from your origin the 1005 is Cloudflares error code , 403 is probably from your origin. Please check Best regards, Hi @CacheCrawler This looks like the same situation we had 4 months ago and you were able to help us here. We have a restricted Rest API. You wrote: For your situation , we added a new API. Please upgrade to v3.2.3 RC2 or wait for new release. See the full information below: https://wordpress.org/support/topic/image-optimization-not-working-3/ Regards, Hi, is this still the code you use ? //Restricts REST API Access With LiteSpeed Cache Modification add_filter( rest_authentication_errors, function( $result ) if ( ! empty( $result ) ) return $result if ( ! is_user_logged_in() && ( ! defined( LSCWP_V ) || ! apply_filters( litespeed_is_from_cloud, false ) ) ) return new WP_Error( rest_not_logged_in, You do not have sufficient permission to access this endpoint. Access to REST API requests is restricted., array( status => 401 ) ) return $result ) meanwhile , please make sure our IPs are whitelisted in cloudflare Best regards, Hi @CacheCrawler This is the code we are using, it has been working for months with no issues: //Restricts REST API Access With LiteSpeed Cache Modification add_filter( rest_authentication_errors, function( $result ) if ( ! empty( $result ) ) return $result if ( ! is_user_logged_in() && ( ! defined( LSCWP_V ) || ! apply_filters( litespeed_is_from_cloud, false ) ) ) return new WP_Error( rest_not_logged_in, You do not have sufficient permission to access this endpoint. Access to REST API requests is restricted., array( status => 401 ) ) return $result ) Hi @CacheCrawler it has been a while since I have asked for help with this issue. This is also affecting our other site with an enterprise LiseSpeeed server. Can you please help? Regards, Hi, Apologize for late response. please change this code from //Restricts REST API Access With LiteSpeed Cache Modification add_filter( rest_authentication_errors, function( $result ) if ( ! empty( $result ) ) return $result if ( ! is_user_logged_in() && ( ! defined( LSCWP_V ) || ! apply_filters( litespeed_is_from_cloud, false ) ) ) return new WP_Error( rest_not_logged_in, You do not have sufficient permission to access this endpoint. Access to REST API requests is restricted., array( status => 401 ) ) return $result ) to //Restricts REST API Access With LiteSpeed Cache Modification add_filter( rest_authentication_errors, function( $result ) error_log( start1 ,3, /path/to/your/public_html/lscwp.log ) error_log( is_user_logged_in() , 3, /path/to/your/public_html/lscwp.log ) error_log( end1 ,3, /path/to/your/public_html/lscwp.log ) error_log( start2 ,3, /path/to/your/public_html/lscwp.log ) error_log( LSCWP_V , 3, /path/to/your/public_html/lscwp.log ) error_log( end2 ,3, /path/to/your/public_html/lscwp.log ) $is_from_cloud = apply_filters( litespeed_is_from_cloud, false ) error_log( start3 ,3, /path/to/your/public_html/lscwp.log ) error_log( $is_from_cloud , 3, /path/to/your/public_html/lscwp.log ) error_log( end3 ,3, /path/to/your/public_html/lscwp.log ) if ( ! empty( $result ) ) return $result if ( ! is_user_logged_in() && ( ! defined( LSCWP_V ) || ! apply_filters( litespeed_is_from_cloud, false ) ) ) return new WP_Error( rest_not_logged_in, You do not have sufficient permission to access this endpoint. Access to REST API requests is restricted., array( status => 401 ) ) return $result ) Expand replace /path/to/your/public_html to your actual path then try optimize an image , after it fails , check the lscwp.log it should log something. Best regards, Hi @CacheCrawler . I implemented the code you have suggested. No image optimization took place. The lscwp.log only shows the following information after 6 hours start1 end1 start2 3.5.2 end2 start3 end3 start1 end1 start2 3.5.2 end2 start3 end3 Hi, I tested the code I provided and it works on my site. I checked again in the log: [domain_id] xxx [site_url] http://www.dr__ko_ter.com[err] Notify failed: error code: 1005 CloudFlare is blocking it. Our IPs has been updated , could you please double check the all IPs are up-to-date ? And if possible , please try it with CloudFlare proxy disabled. this way we can at least narrow down if issue is from CF or from your origin. Best regards, Hi @CacheCrawler We are currently checking all the new IPs that you have mentioned, one by one. What is the user agent that LiteSpeed uses when requesting images from a site? We have a wide variety of user agents that are banned at Cloudflare and we want to make sure that this not what is causing the problem. For example user agents like RestSharp, AHC and many others are blocked at Cloudflare. Let us know, Thanks Hi, It should be QUIC.cloud image optimization Best regards, Hi, Im going to mark this topic Resolved , due to lack of activity. If you still need help, please feel free to re-open it. Best regards,
LiteCache Rush: Speed comes from using less, not from doing it faster
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