Title: PHP Error – Uncaught Google_Auth_Exception: Error refreshing the OAuth2 token
Last modified: September 21, 2016

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# PHP Error – Uncaught Google_Auth_Exception: Error refreshing the OAuth2 token

 *  [twentyfourdegrees](https://wordpress.org/support/users/twentyfourdegrees/)
 * (@twentyfourdegrees)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/php-error-uncaught-google_auth_exception-error-refreshing-the-oauth2-token/)
 * Hello,
 * I installed and configured the Google SMTP plugin. The status is connected, I
   have updated everything but when I try to send a test email, I get the following
   error:
 * Uncaught Google_Auth_Exception: Error refreshing the OAuth2 token, message: ‘{“
   error” : “invalid_request”, “error_description” : “Missing required parameter:
   refresh_token” }’ in /srv/bindings/51056139c8ec413492a638212ed8ae8a/code/wp-content/
   plugins/gmail-smtp/google-api-php-client/src/Google/Auth/OAuth2.php:363 Stack
   trace: #0 /srv/bindings/…
 * It used to work perfectly. I did go from php 5.5 to 7, so maybe that’s the reason?
 * thanks,
 * Mich

The topic ‘PHP Error – Uncaught Google_Auth_Exception: Error refreshing the OAuth2
token’ is closed to new replies.

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## Tags

 * [gmail](https://wordpress.org/support/topic-tag/gmail/)
 * [OAuth2](https://wordpress.org/support/topic-tag/oauth2/)

 * 0 replies
 * 1 participant
 * Last reply from: [twentyfourdegrees](https://wordpress.org/support/users/twentyfourdegrees/)
 * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/php-error-uncaught-google_auth_exception-error-refreshing-the-oauth2-token/)
 * Status: not resolved