Wordpress LScache Plugin: IAPI Error A valid URL was not provided.
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hello, I am using LiteSpeed Cache Image Optimization v2.9 for WordPress. Everything worked fine with image optimization till some days back: Current Stage Status Images optimized and pulled: 1608 groups (11053 images) Image Information 98% Images total: 1648 groups Images not yet requested: 40 groups Optimization Summary Total Reduction: 143.28M Images Pulled: 8817 Last Request: 12/23/2018 10:27:52 Storage Optimization Last calculated: 01/06/2019 21:25:36 Files: 11053 Total: 1.31G Now when i press Send optimization request i receive an error: IAPI Error A valid URL was not provided. I tried to reset IAPY Key (with success), also Clean up unfinished data but nothing help. thanks for any help, Robert The page I need help with: https://www.aiudulmeu.ro Hello, no slution for my problem? Hi @robilix, sorry for late reply, can you provide your Report Number for us, you can find in?WP Admin > LiteSpeed Cache > Report. Hello, Sorry, i have opened a forum ticket also on the litespeedtech.com support forum. Here is: Report number: JFFFJUZG Also on that page i have on top IAPI Error A valid URL was not provided. thank you, Robert Hi @robilix, can you turn on the Litespeed Cache > Debug > Debug Log [Admin IP olny] and set you IPs on Admin IPs, And then send us the debug log under Litespeed Cache > Debug Log after you Send optimization request Hello, Yes, here is the log 01/16/19 15:30:21.688 [162.158.91.90:13002 1 XuB] ??GET HTTP/1.1 (HTTPS) /wp-admin/admin.php 01/16/19 15:30:21.688 [162.158.91.90:13002 1 XuB] Query String: page=lscache-settings 01/16/19 15:30:21.688 [162.158.91.90:13002 1 XuB] HTTP_REFERER: https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-settings 01/16/19 15:30:21.688 [162.158.91.90:13002 1 XuB] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/16/19 15:30:22.707 [172.69.55.125:51484 1 d1D] ??GET HTTP/1.1 (HTTPS) /wp-admin/admin.php 01/16/19 15:30:22.707 [172.69.55.125:51484 1 d1D] Query String: page=lscache-optimization 01/16/19 15:30:22.707 [172.69.55.125:51484 1 d1D] HTTP_REFERER: https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-settings 01/16/19 15:30:22.707 [172.69.55.125:51484 1 d1D] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/16/19 15:30:23.198 [162.158.91.90:13002 1 XuB] [Ctrl] X Cache_control -> private ( logged in user ) 01/16/19 15:30:23.200 [172.69.55.125:51484 1 d1D] [Ctrl] X Cache_control -> private ( logged in user ) 01/16/19 15:30:24.131 [162.158.91.90:13002 1 XuB] [Ctrl] X Cache_control -> no Cache ( Admin page ) 01/16/19 15:30:24.140 [172.69.55.125:51484 1 d1D] [Ctrl] X Cache_control -> no Cache ( Admin page ) 01/16/19 15:30:24.318 [162.158.91.90:13002 1 XuB] [Ctrl] not cacheable before ctrl finalize 01/16/19 15:30:24.353 [162.158.91.90:13002 1 XuB] [Router] get_uid: 2 01/16/19 15:30:24.380 [162.158.91.90:13002 1 XuB] [Router] get_role: administrator 01/16/19 15:30:24.386 [162.158.91.90:13002 1 XuB] X-LiteSpeed-Cache-Control: no-cache 01/16/19 15:30:24.386 [162.158.91.90:13002 1 XuB] [Optm] bypass: Not frontend HTML type 01/16/19 15:30:24.386 [162.158.91.90:13002 1 XuB] End response ??????????????????????????? 01/16/19 15:30:24.778 [172.69.55.125:51484 1 d1D] [Ctrl] not cacheable before ctrl finalize 01/16/19 15:30:24.778 [172.69.55.125:51484 1 d1D] [Router] get_uid: 2 01/16/19 15:30:24.778 [172.69.55.125:51484 1 d1D] [Router] get_role: administrator 01/16/19 15:30:24.780 [172.69.55.125:51484 1 d1D] X-LiteSpeed-Cache-Control: no-cache 01/16/19 15:30:24.780 [172.69.55.125:51484 1 d1D] [Optm] bypass: Not frontend HTML type 01/16/19 15:30:24.780 [172.69.55.125:51484 1 d1D] End response ??????????????????????????? 01/16/19 15:30:36.739 [172.69.55.125:14036 1 mrf] ??GET HTTP/1.1 (HTTPS) /wp-admin/admin.php 01/16/19 15:30:36.739 [172.69.55.125:14036 1 mrf] Query String: page=lscache-optimization&LSCWP_CTRL=img_optm&LSCWP_NONCE=01888ed29c&type=img_optm 01/16/19 15:30:36.739 [172.69.55.125:14036 1 mrf] HTTP_REFERER: https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-optimization 01/16/19 15:30:36.739 [172.69.55.125:14036 1 mrf] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/16/19 15:30:37.239 [172.69.55.125:14036 1 mrf] [Ctrl] X Cache_control -> private ( logged in user ) 01/16/19 15:30:37.241 [172.69.55.125:14036 1 mrf] [Router] LSCWP_CTRL: img_optm 01/16/19 15:30:37.241 [172.69.55.125:14036 1 mrf] [Router] LSCWP_CTRL verified: img_optm 01/16/19 15:30:37.247 [172.69.55.125:14036 1 mrf] [Router] parsed type: img_optm 01/16/19 15:30:37.247 [172.69.55.125:14036 1 mrf] [Img_Optm] preparing images to push 01/16/19 15:30:37.284 [172.69.55.125:14036 1 mrf] [Img_Optm] found images: 76 01/16/19 15:31:28.909 [162.158.92.161:21346 1 j5k] ??POST HTTP/1.1 (HTTPS) /wp-admin/admin-ajax.php 01/16/19 15:31:28.909 [162.158.92.161:21346 1 j5k] Query String: 01/16/19 15:31:28.909 [162.158.92.161:21346 1 j5k] HTTP_REFERER: https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-optimization 01/16/19 15:31:28.909 [162.158.92.161:21346 1 j5k] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/16/19 15:31:29.838 [162.158.92.161:21346 1 j5k] [Ctrl] X Cache_control -> private ( logged in user ) 01/16/19 15:31:31.599 [162.158.92.161:21346 1 j5k] [Ctrl] X Cache_control -> no Cache ( Admin page ) 01/16/19 15:31:31.732 [162.158.92.161:21346 1 j5k] [Ctrl] not cacheable before ctrl finalize 01/16/19 15:31:31.748 [162.158.92.161:21346 1 j5k] [Router] get_uid: 2 01/16/19 15:31:31.764 [162.158.92.161:21346 1 j5k] [Router] get_role: administrator 01/16/19 15:31:31.796 [162.158.92.161:21346 1 j5k] X-LiteSpeed-Cache-Control: no-cache 01/16/19 15:31:31.870 [162.158.92.161:21346 1 j5k] [Optm] bypass: Not frontend HTML type 01/16/19 15:31:31.885 [162.158.92.161:21346 1 j5k] End response ??????????????????????????? 01/16/19 15:32:05.166 [172.69.55.125:14036 1 mrf] [Img_Optm] prepared images to push: groups 76 images 608 01/16/19 15:32:05.169 [172.69.55.125:14036 1 mrf] [IAPI] posting to : https://wp.api.litespeedtech.com/list_clouds 01/16/19 15:32:05.930 [172.69.55.125:14036 1 mrf] [Util] ping [Domain] us.wp.api.litespeedtech.com [Speed] 99999 01/16/19 15:32:05.935 [172.69.55.125:14036 1 mrf] [Util] ping [Domain] eu.wp.api.litespeedtech.com [Speed] 99999 01/16/19 15:32:05.935 [172.69.55.125:14036 1 mrf] [Util] ping [Domain] as.wp.api.litespeedtech.com [Speed] 99999 01/16/19 15:32:05.935 [172.69.55.125:14036 1 mrf] [IAPI] failed to ping all clouds 01/16/19 15:32:05.935 [172.69.55.125:14036 1 mrf] [IAPI] req auth_key 01/16/19 15:32:05.937 [172.69.55.125:14036 1 mrf] [IAPI] posting to : /request_key 01/16/19 15:32:05.938 [172.69.55.125:14036 1 mrf] [IAPI] failed to post: A valid URL was not provided. 01/16/19 15:32:05.938 [172.69.55.125:14036 1 mrf] [IAPI] request key failed: ? A valid URL was not provided. 01/16/19 15:32:05.941 [172.69.55.125:14036 1 mrf] [IAPI] posting to : /request_optimize 01/16/19 15:32:05.941 [172.69.55.125:14036 1 mrf] [IAPI] failed to post: A valid URL was not provided. 01/16/19 15:32:05.941 [172.69.55.125:14036 1 mrf] [Ctrl] 301 from https://www.aiudulmeu.ro/wp-admin/admin.php 01/16/19 15:32:05.941 [172.69.55.125:14036 1 mrf] [Ctrl] 301 to https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-optimization&type=img_optm 01/16/19 15:32:05.941 [172.69.55.125:14036 1 mrf] [Ctrl] X Cache_control -> no Cache ( 301 to same url ) 01/16/19 15:32:05.942 [172.69.55.125:14036 1 mrf] [Ctrl] not cacheable before ctrl finalize 01/16/19 15:32:05.942 [172.69.55.125:14036 1 mrf] [Router] get_uid: 2 01/16/19 15:32:05.942 [172.69.55.125:14036 1 mrf] [Router] get_role: administrator 01/16/19 15:32:05.944 [172.69.55.125:14036 1 mrf] X-LiteSpeed-Cache-Control: no-cache 01/16/19 15:32:05.944 [172.69.55.125:14036 1 mrf] [Optm] bypass: Not frontend HTML type 01/16/19 15:32:05.944 [172.69.55.125:14036 1 mrf] End response ??????????????????????????? 01/16/19 15:32:06.334 [172.69.55.125:19750 1 x03] ??GET HTTP/1.1 (HTTPS) /wp-admin/admin.php 01/16/19 15:32:06.334 [172.69.55.125:19750 1 x03] Query String: page=lscache-optimization&type=img_optm 01/16/19 15:32:06.334 [172.69.55.125:19750 1 x03] HTTP_REFERER: https://www.aiudulmeu.ro/wp-admin/admin.php?page=lscache-optimization 01/16/19 15:32:06.334 [172.69.55.125:19750 1 x03] Cookie _lscache_vary: admin_bar:1 logged-in:1 role:99 01/16/19 15:32:06.581 [172.69.55.125:19750 1 x03] [Ctrl] X Cache_control -> private ( logged in user ) 01/16/19 15:32:07.908 [172.69.55.125:19750 1 x03] [Ctrl] X Cache_control -> no Cache ( Admin page ) 01/16/19 15:32:08.036 [172.69.55.125:19750 1 x03] [Ctrl] not cacheable before ctrl finalize 01/16/19 15:32:08.036 [172.69.55.125:19750 1 x03] [Router] get_uid: 2 01/16/19 15:32:08.036 [172.69.55.125:19750 1 x03] [Router] get_role: administrator 01/16/19 15:32:08.037 [172.69.55.125:19750 1 x03] X-LiteSpeed-Cache-Control: no-cache 01/16/19 15:32:08.038 [172.69.55.125:19750 1 x03] [Optm] bypass: Not frontend HTML type 01/16/19 15:32:08.038 [172.69.55.125:19750 1 x03] End response ??????????????????????????? Thank you, Robert One thing more, i use CloudFlare, but it is not something new. I have used it from first steps, before installed LiteSpeed and all worked fine till now. Hi @robilix, thanks for the information. We will get back to you if have any updates. Hello, Hosting company gaved a solution that under cPanel -> Select PHP Version -> Switch To PHP Options -> remove everything at disable_functions (fsockopen, passthru, system, dl, proc_open, proc_close, shell, shell_exec, ini_alter, ini_restore, popen, escapeshellarg, escapeshellcmd, pcntl_exec, proc_terminate, proc_nice, error_log, syslog, link, symlink, proc_open_status, readlink, virtual, shell, mysql_pconnect, exec, disk_free_space, diskfreespace, disk_total_space, getmyuid, getmypid, getrusage, highlight_file, php_uname, show_source, proc_get_status, posix_kill, posix_mkfifo, posix_setpgid, posix_setsid, posix_setuid, posix_getpwuid, allow_url_fopen) After that works again. Robert Thanks for the update, our image optimization needs to use fsockopen to check the connection with our server, so it will be blocked because the function has been disabled.
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