Title: ReferenceError: Cannot access ‘O’ before initialization
Last modified: May 10, 2023

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# ReferenceError: Cannot access ‘O’ before initialization

 *  Resolved [JohnnyAfrica](https://wordpress.org/support/users/jcnyc/)
 * (@jcnyc)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/referenceerror-cannot-access-o-before-initialization/)
 * Hi team, I’m getting an error when I try to use anything in Mailpoet. I see this
   error message
 *     ```wp-block-code
       ReferenceError: Cannot access 'O' before initialization 
       File name: No fileName reported 
       Stack trace: ReferenceError: Cannot access 'O' before initialization
           at Object.x (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:414495)
           at j (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/admin.js?ver=4.15.0:2:29899)
           at ga (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1549679)
           at mc (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1606638)
           at fA (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1595620)
           at bA (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1595548)
           at dA (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1595411)
           at iA (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1592552)
           at Io (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1533525)
           at sA (https://johnnyafrica.com/wp-content/plugins/mailpoet/assets/dist/js/commons.js?ver=4.15.0:9:1593056)
       ```
   
 * If i click on any of the other pages like list, subscribers, emails etc. it just
   has an empty page. I also tried to roll back the mailpoet versions also to no
   success.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Bruna a11n](https://wordpress.org/support/users/bruberries/)
 * (@bruberries)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/referenceerror-cannot-access-o-before-initialization/#post-16728642)
 * Hi [@jcnyc](https://wordpress.org/support/users/jcnyc/),
 * We believe this could either be a plugin conflict or a caching issue.
    1. Make sure to clear your browser’s cache, and the cache on your site and server,
       and then try again.
    2. Try to open the wp-admin page in an incognito / Private Browser window and check
       if the issue persists.
    3. Test for a plugin conflict to rule out any conflicts with other plugins or your
       theme. You can refer to this article: [https://kb.mailpoet.com/article/204-how-to-test-for-plugins-conflict](https://kb.mailpoet.com/article/204-how-to-test-for-plugins-conflict)
 * Let us know how that goes!
 *  Plugin Support [Fernando M. a11n](https://wordpress.org/support/users/fernmed/)
 * (@fernmed)
 * [3 years ago](https://wordpress.org/support/topic/referenceerror-cannot-access-o-before-initialization/#post-16779499)
 * We haven’t heard back from you in a while, so I’m going to mark this as resolved–
   we’ll be here if and/or when you are ready to continue.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘ReferenceError: Cannot access ‘O’ before initialization’ is closed to
new replies.

 * ![](https://ps.w.org/mailpoet/assets/icon-256x256.png?rev=3284564)
 * [MailPoet - Newsletters, Email Marketing, and Automation](https://wordpress.org/plugins/mailpoet/)
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 * 2 replies
 * 3 participants
 * Last reply from: [Fernando M. a11n](https://wordpress.org/support/users/fernmed/)
 * Last activity: [3 years ago](https://wordpress.org/support/topic/referenceerror-cannot-access-o-before-initialization/#post-16779499)
 * Status: resolved