CurL error in upgradation


When upgrading from to

Got this error log

[09-Apr-2024 01:27:04 UTC] PHP Fatal error: Uncaught GuzzleHttp\Exception\ConnectException: cURL error 6: getaddrinfo() thread failed to start (see in /home/pjcpkuco/public_html/lib/pkp/lib/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:200
Stack trace:
#0 /home/pjcpkuco/public_html/lib/pkp/lib/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(155): GuzzleHttp\Handler\CurlFactory::createRejection(Object(GuzzleHttp\Handler\EasyHandle), Array)
#1 /home/pjcpkuco/public_html/lib/pkp/lib/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(105): GuzzleHttp\Handler\CurlFactory::finishError(Object(GuzzleHttp\Handler\CurlHandler), Object(GuzzleHttp\Handler\EasyHandle), Object(GuzzleHttp\Handler\CurlFactory))
#2 /home/pjcpkuco/public_html/lib/pkp/lib/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php(43): GuzzleHttp\Handler\CurlFactory::finish(Object(GuzzleHttp\Handler\CurlHandler), Object(GuzzleHttp\Handler\EasyHandle), Object(GuzzleHttp\Handler\CurlFactory))
#3 /home/pjcpkuco/public_html/lib/pkp/l in /home/pjcpkuco/public_html/lib/pkp/lib/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php on line 200

Please guide

@rcgillis @asmecher

Dear Please see and guide

The website is opening fine but on the backend. Some pages like Journal, and Administration are giving 500 error

Where else the Plugins tab and other tabs like these keep loading and loading; never show anything.

Also when loading pages on the backend gives β€œAn unexpected error has occurred. Please reload the page and try again.”

link for the website is This

Please help

Hi @a2usmani,

It seems as though your server is firewalled from accessing the PKP web server. This is required for getting the plugin list for the Plugin Gallery, and checking the latest version of OJS. You might need to configure a proxy in your configuration file.

Alec Smecher
Public Knowledge Project Team

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