1.1.5 500 Server Error

Update:
I have tried the following with no success, these suggestions from these articles throw 500 error on every website page that had the plugin enabled:
https://flwebsites.biz/posts/how-fix-curl-error-60-ssl-issue
https://github.com/google/google-api-php-client/issues/788
https://noorsplugin.com/how-to-fix-curl-error-60-ssl-certificate-problem-unable-to-get-local-issuer-certificate/

Clean error with call stack for easier viewing:

Fatal error: Uncaught exception 'GuzzleHttp\\Exception\\RequestException' with message 'cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)' in /home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:187

Stack Trace:
/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(150): GuzzleHttp\\Handler\\CurlFactory::createRejection()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(103): GuzzleHttp\\Handler\\CurlFactory::finishError()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php(43): GuzzleHttp\\Handler\\CurlFactory::finish()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(28): GuzzleHttp\\Handler\\CurlHandler->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(51): Closure$GuzzleHttp\\Handler\\Proxy::wrapSync()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php(66): Closure$GuzzleHttp\\Handler\\Proxy::wrapStreaming()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Middleware.php(30): GuzzleHttp\\PrepareBodyMiddleware->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php(70): Closure$GuzzleHttp\\Middleware::cookies#2()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Middleware.php(57): GuzzleHttp\\RedirectMiddleware->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/HandlerStack.php(67): Closure$GuzzleHttp\\Middleware::httpErrors#2()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(277): GuzzleHttp\\HandlerStack->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(100): GuzzleHttp\\Client->transfer()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(106): GuzzleHttp\\Client->sendAsync()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/google/auth/src/HttpHandler/Guzzle6HttpHandler.php(34): GuzzleHttp\\Client->send()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/google/auth/src/OAuth2.php(492): Google\\Auth\\HttpHandler\\Guzzle6HttpHandler->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.php(191): Google\\Auth\\OAuth2->fetchAuthToken()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.php(170): Google_Client->fetchAccessTokenWithAuthCode()

/home/***/public_html/wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php(99): Google_Client->authenticate()

/home/***/public_html/wp-content/plugins/gmail-smtp/main.php(144): GmailXOAuth2::resetCredentials()

/home/***/public_html/wp-includes/class-wp-hook.php(298): GMAIL_SMTP->plugin_init()

/home/***/public_html/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters()

/home/***/public_html/wp-includes/plugin.php(453): WP_Hook->do_action()

/home/***/public_html/wp-settings.php(448): do_action()

/home/***/public_html/wp-config.php(105): include()

/home/***/public_html/wp-load.php(37): include()

/home/***/public_html/wp-admin/admin.php(31): include()

/home/***/public_html/wp-admin/options-general.php(10): include()

Thanks.

Setting it to:
$conf[CURLOPT_SSL_VERIFYPEER] = false;
in CurlFactory.php

did work but I don’t like that solution for obvious reasons.

• This reply was modified 7 years, 3 months ago by aedelgod.
• This reply was modified 7 years, 3 months ago by aedelgod. Reason: added file name of change

Update:
Changing the configuration to:
$conf[CURLOPT_SSL_VERIFYPEER] = false;
in CurlFactory.php

allows it to work but this is not a valid solution.

I have followed the rabbit hole with your previous replies to similar issues but none of them works for me. The following articles also did not help, it actually made matters worse:
https://flwebsites.biz/posts/how-fix-curl-error-60-ssl-issue
https://noorsplugin.com/how-to-fix-curl-error-60-ssl-certificate-problem-unable-to-get-local-issuer-certificate/
https://stackoverflow.com/questions/21114371/php-curl-error-code-60

All the sites that use this have valid CA certs from Comodo or Let’s encrypt so we can rule out the actual cert and configuration of the cert out. It certainly resides in the compatibility of GuzzleHttp and the plugin/server. I am in talks with my hosting provider but prior to the update, everything was working fine. What Google API PHP client version were you using before in 1.1.3/1.1.4? Thanks.

Cleaner Stack:

Fatal error: Uncaught exception 'GuzzleHttp\\Exception\\RequestException' with message 'cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)' in /home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:187

Stack Trace:
/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(150): GuzzleHttp\\Handler\\CurlFactory::createRejection()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(103): GuzzleHttp\\Handler\\CurlFactory::finishError()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php(43): GuzzleHttp\\Handler\\CurlFactory::finish()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(28): GuzzleHttp\\Handler\\CurlHandler->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(51): Closure$GuzzleHttp\\Handler\\Proxy::wrapSync()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php(66): Closure$GuzzleHttp\\Handler\\Proxy::wrapStreaming()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Middleware.php(30): GuzzleHttp\\PrepareBodyMiddleware->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php(70): Closure$GuzzleHttp\\Middleware::cookies#2()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Middleware.php(57): GuzzleHttp\\RedirectMiddleware->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/HandlerStack.php(67): Closure$GuzzleHttp\\Middleware::httpErrors#2()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(277): GuzzleHttp\\HandlerStack->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(100): GuzzleHttp\\Client->transfer()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/guzzlehttp/guzzle/src/Client.php(106): GuzzleHttp\\Client->sendAsync()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/google/auth/src/HttpHandler/Guzzle6HttpHandler.php(34): GuzzleHttp\\Client->send()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/vendor/google/auth/src/OAuth2.php(492): Google\\Auth\\HttpHandler\\Guzzle6HttpHandler->__invoke()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.php(191): Google\\Auth\\OAuth2->fetchAuthToken()

/home/***/public_html/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.php(170): Google_Client->fetchAccessTokenWithAuthCode()

/home/***/public_html/wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php(99): Google_Client->authenticate()

/home/***/public_html/wp-content/plugins/gmail-smtp/main.php(144): GmailXOAuth2::resetCredentials()

/home/***/public_html/wp-includes/class-wp-hook.php(298): GMAIL_SMTP->plugin_init()

/home/***/public_html/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters()

/home/***/public_html/wp-includes/plugin.php(453): WP_Hook->do_action()

/home/***/public_html/wp-settings.php(448): do_action()

/home/***/public_html/wp-config.php(105): include()

/home/***/public_html/wp-load.php(37): include()

/home/***/public_html/wp-admin/admin.php(31): include()

/home/***/public_html/wp-admin/options-general.php(10): include()

The plugin was using Google API Client version 1.1.5. I recently updated it to 2.2.0 since it was conflicting with so many other plugins that use the latest version of the client library.

Hi,

Did the update resolve the issue? How can I update?

Thanks
Rotimi