Title: Uncaught TypeError
Last modified: January 11, 2017

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# Uncaught TypeError

 *  Resolved [Muzzera](https://wordpress.org/support/users/comunicamuh/)
 * (@comunicamuh)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-typeerror-15/)
 * Hello, i have an issue when I blur on email field it logs an error:
 *     ```
       Uncaught TypeError: params.append is not a function
           at submit_this_form ((index):238)
           at HTMLInputElement.<anonymous> ((index):233)
           at HTMLInputElement.dispatch (concat.min.js?ver=1.0.0:2)
           at HTMLInputElement.m.handle (concat.min.js?ver=1.0.0:2)
       submit_this_form @ (index):238
       (anonymous) @ (index):233
       dispatch @ concat.min.js?ver=1.0.0:2
       m.handle @ concat.min.js?ver=1.0.0:2
       ```
   
 * Thanks

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

 *  [Scott DeLuzio](https://wordpress.org/support/users/scottdeluzio/)
 * (@scottdeluzio)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-typeerror-15/#post-8643684)
 * Hi [@comunicamuh](https://wordpress.org/support/users/comunicamuh/),
    I am not
   able to reproduce this error on my end. Is it just the email field, or any of
   the fields? Also is this only in the Contacts or Organizations as well?
 * **Troubleshooting:**
    Make sure that you have the most recent version of the 
   plugin installed (2.0.16), and updated WordPress to 4.7.1.
 * If both of those are updated to the most recent, try deactivating all other plugins
   and revert to a default theme (TwentySeventeen, TwentySixteen, etc.). If this
   fixes the problem, reactivate each plugin one-by-one until the problem comes 
   back, retesting after each activation.
 *  [Scott DeLuzio](https://wordpress.org/support/users/scottdeluzio/)
 * (@scottdeluzio)
 * [9 years, 2 months ago](https://wordpress.org/support/topic/uncaught-typeerror-15/#post-8976043)
 * Marking as resolved due to lack of response. Please open this thread again if
   you are still having issues.

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

The topic ‘Uncaught TypeError’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [Scott DeLuzio](https://wordpress.org/support/users/scottdeluzio/)
 * Last activity: [9 years, 2 months ago](https://wordpress.org/support/topic/uncaught-typeerror-15/#post-8976043)
 * Status: resolved