[05-Jan-2026 17:30:23 UTC] PHP Fatal error:  Uncaught GuzzleHttp\Exception\ConnectException: cURL error 52: Empty reply from server (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://oauth2.googleapis.com/token in /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:210
Stack trace:
#0 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(158): GuzzleHttp\Handler\CurlFactory::createRejection()
#1 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(110): GuzzleHttp\Handler\CurlFactory::finishError()
#2 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php(47): GuzzleHttp\Handler\CurlFactory::finish()
#3 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(28): GuzzleHttp\Handler\CurlHandler->__invoke()
#4 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/Proxy.php(48): GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler\{closure}()
#5 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php(64): GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler\{closure}()
#6 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Middleware.php(31): GuzzleHttp\PrepareBodyMiddleware->__invoke()
#7 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php(71): GuzzleHttp\Middleware::GuzzleHttp\{closure}()
#8 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Middleware.php(66): GuzzleHttp\RedirectMiddleware->__invoke()
#9 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/HandlerStack.php(75): GuzzleHttp\Middleware::GuzzleHttp\{closure}()
#10 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Client.php(333): GuzzleHttp\HandlerStack->__invoke()
#11 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Client.php(107): GuzzleHttp\Client->transfer()
#12 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Client.php(124): GuzzleHttp\Client->sendAsync()
#13 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/google/auth/src/HttpHandler/Guzzle6HttpHandler.php(47): GuzzleHttp\Client->send()
#14 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/google/auth/src/OAuth2.php(671): Google\Auth\HttpHandler\Guzzle6HttpHandler->__invoke()
#15 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/google/auth/src/Credentials/ServiceAccountCredentials.php(209): Google\Auth\OAuth2->fetchAuthToken()
#16 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/google/auth/src/FetchAuthTokenCache.php(89): Google\Auth\Credentials\ServiceAccountCredentials->fetchAuthToken()
#17 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/src/Client.php(338): Google\Auth\FetchAuthTokenCache->fetchAuthToken()
#18 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/sendmessage.php(73): Google\Client->fetchAccessTokenWithAssertion()
#19 /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/sendmessage.php(30): getAccessToken()
#20 {main}
  thrown in /home/o2ihw81b7y0g/public_html/courierapi/nuevaapi/api/notification_firebase/Helpers/googleapi/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php on line 210
