Wordpress LScache Plugin: Image Optimization cURL error
Last Updated on: Wed, 15 Apr 2026 00:00:02 ERRORS: IAPI Error cURL error 28: Operation timed out after 15000 milliseconds with 0 bytes received Failed to push to LiteSpeed IAPI server: no auth_key BACKGROUND: We recently migrated our site to a new VPS. Image optimization was working fine on the old server however, Ive been running into some issues with the new server. I already updated the IAPI key. Any suggestions on how I may solve this problem? SITE LINK: https://SquarzPies.com REPORT: TXQGBZCB DEBUG LOG: 05/31/18 00:07:36.385 [34.198.229.186:41844 1 bOv] POST HTTP/1.1 / 05/31/18 00:07:36.385 [34.198.229.186:41844 1 bOv] Query String: litespeed_callback=1 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [IAPI] __callback hash check Moy6TbfV2aeaEYvg: passed 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Router] LSCWP_CTRL: sapi_passive_callback 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Router] LSCWP_CTRL verified: sapi_passive_callback 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Router] parsed type: request_callback 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [IAPI] __callback request hash: Moy6TbfV2aeaEYvg 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Ctrl] not cacheable before ctrl finalize 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Router] get_uid: 0 05/31/18 00:07:36.982 [34.198.229.186:41844 1 bOv] [Router] get_role: 05/31/18 00:07:36.983 [34.198.229.186:41844 1 bOv] [Router] role: guest 05/31/18 00:07:36.983 [34.198.229.186:41844 1 bOv] [Vary] role id: failed, guest 05/31/18 00:07:36.983 [34.198.229.186:41844 1 bOv] X-LiteSpeed-Cache-Control: no-cache 05/31/18 00:07:36.984 [34.198.229.186:41844 1 bOv] GUI init 05/31/18 00:07:36.984 [34.198.229.186:41844 1 bOv] [Optm] bypass: Not frontend HTML type 05/31/18 00:07:36.984 [34.198.229.186:41844 1 bOv] End response =============================================== 05/31/18 00:07:48.679 [98.191.186.108:59482 1 b3i] [IAPI] failed to post: cURL error 28: Operation timed out after 15000 milliseconds with 0 bytes received 05/31/18 00:07:48.679 [98.191.186.108:59482 1 b3i] [IAPI] request key failed: ? cURL error 28: Operation timed out after 15000 milliseconds with 0 bytes received 05/31/18 00:07:48.703 [98.191.186.108:59482 1 b3i] [IAPI] posting to : https://wp.api.litespeedtech.com/request_optimize 05/31/18 00:07:49.302 [98.191.186.108:59482 1 b3i] [IAPI] failed to decode post json: no auth_key 05/31/18 00:07:49.302 [98.191.186.108:59482 1 b3i] [Img_Optm] Failed to post to LiteSpeed IAPI server ? no auth_key 05/31/18 00:07:49.306 [98.191.186.108:59482 1 b3i] [Ctrl] not cacheable before ctrl finalize 05/31/18 00:07:49.306 [98.191.186.108:59482 1 b3i] [Router] get_uid: 1 05/31/18 00:07:49.306 [98.191.186.108:59482 1 b3i] [Router] get_role: administrator 05/31/18 00:07:49.307 [98.191.186.108:59482 1 b3i] X-LiteSpeed-Cache-Control: no-cache 05/31/18 00:07:49.307 [98.191.186.108:59482 1 b3i] [Optm] bypass: Not frontend HTML type 05/31/18 00:07:49.307 [98.191.186.108:59482 1 b3i] End response This topic was modified 4 years, 6 months ago by majama. Hi, That looks like network issue ? Could you please try telnet it from your server to image server ? You can get server list at bottom of this wiki: https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:image-optimization Best regards, Youre right. Such a simple fix. Thanks for pointing me in the correct direction!
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