Title: Undefined Class Constant VERSION
Last modified: August 17, 2020

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# Undefined Class Constant VERSION

 *  Resolved [bkonia](https://wordpress.org/support/users/bkonia/)
 * (@bkonia)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/undefined-class-constant-version/)
 * I’m getting the following error on the redirect URL page after authenticating
   with Google:
 * Fatal error: Uncaught Error: Undefined class constant ‘VERSION’ in /var/www/vhosts/
   clinicalmatchme.com/httpdocs/wp-content/plugins/gmail-smtp/google-api-php-client/
   src/Google/Client.php:1042 Stack trace: #0 /var/www/vhosts/clinicalmatchme.com/
   httpdocs/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.
   php(1032): Google_Client->createDefaultHttpClient() #1 /var/www/vhosts/clinicalmatchme.
   com/httpdocs/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.
   php(190): Google_Client->getHttpClient() #2 /var/www/vhosts/clinicalmatchme.com/
   httpdocs/wp-content/plugins/gmail-smtp/google-api-php-client/src/Google/Client.
   php(170): Google_Client->fetchAccessTokenWithAuthCode(‘4/3AEDCyskHG8KG…’) #3 /
   var/www/vhosts/clinicalmatchme.com/httpdocs/wp-content/plugins/gmail-smtp/class.
   phpmaileroauthgoogle.php(100): Google_Client->authenticate(‘4/3AEDCyskHG8KG…’)#
   4 /var/www/vhosts/clinicalmatchme.com/httpdocs/wp-content/plugins/gmail-smtp/
   main.php(144): GmailXOAuth2::resetCredentials(‘4/3AEDCyskHG8KG…’) in /var/www/
   vhosts/clinicalmatchme.com/httpdocs/wp-content/plugins/gmail-smtp/google-api-
   php-client/src/Google/Client.php on line 1042
 * I’m running PHP 7.3.21.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [bkonia](https://wordpress.org/support/users/bkonia/)
 * (@bkonia)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/undefined-class-constant-version/#post-13271456)
 * Here’s the complete server info:
 * OS: Linux mail.hostland.com 4.4.0-1099-aws #110-Ubuntu SMP Fri Nov 15 00:08:08
   UTC 2019 x86_64
    PHP version: 7.3.21 WordPress version: 5.5 WordPress multisite:
   No openssl: Available allow_url_fopen: Enabled stream_socket_client: Available
   fsockopen: Available cURL: Available cURL Version: 7.47.0, OpenSSL/1.0.2g
 *  [movss](https://wordpress.org/support/users/movss/)
 * (@movss)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/undefined-class-constant-version/#post-13643399)
 * I got the same error. Did you resolved it?
 *  [movss](https://wordpress.org/support/users/movss/)
 * (@movss)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/undefined-class-constant-version/#post-13643896)
 * Just disable and re-enable SMTP Plugin and the error gone. Fine )
    -  This reply was modified 5 years, 7 months ago by [movss](https://wordpress.org/support/users/movss/).

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Undefined Class Constant VERSION’ is closed to new replies.

 * ![](https://ps.w.org/gmail-smtp/assets/icon-128x128.png?rev=2432932)
 * [Gmail SMTP](https://wordpress.org/plugins/gmail-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/gmail-smtp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/gmail-smtp/)
 * [Active Topics](https://wordpress.org/support/plugin/gmail-smtp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/gmail-smtp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/gmail-smtp/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [movss](https://wordpress.org/support/users/movss/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/undefined-class-constant-version/#post-13643896)
 * Status: resolved