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Unknown error (invalid-json)
Plugins WordPress

Unknown error (invalid-json) WordPress Login

For some unknown reasons, when I tried to log into WordPress to edit or add posts, the screens came up with “Unknown error (invalid-json). Please contact an administrator for more info.”. I tried my test blog without the BWP reCaptcha and I could log in without any problem. So I renamed the plugin and voila, the error message is gone and I can log in without any problems. This problem also exist in the comment section, we also need to remove the option for the comment if we want to use this.

Unknown error (invalid-json) Rename BWP reCaptcha plugin

uncheck comment option bwp-reCAPTCHA

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7 Comment

  1. I had this same error. This is how I fixed it
    1) I used an FTP client rather than cPanel to rename the bwp recaptcha plugin as suggested. Either will do the trick. (Keep cPanel or the FTP open you’ll need them in step 4)
    2) Log into WordPress
    3) Go to Dashboard Menu =>Plugins (you may see a message stating bwp recaptcha error plugin not found)
    4) Go to the FTP client or cPanel File Manager and Rename bwp recaptcha1 back to bwp recaptcha
    5) Go to WordPress =>Dashboard Menu =>Plugins and activate bwp recaptcha
    6) Go to WordPress =>Dashboard Menu =>BWP reCAPT General Options and copy the “Site Key” and “Secret Key”
    7) Got to WordPress =>Dashboard Menu =>Contact =>Integration and past the “Site Key” and “Secret Key” into reCAPTCHA integration
    8) Open another browser window. Not a new tab a new window. You’ll want to keep the WP Dashboard session active in case this fix does not work for you. You will be able to quickly deactivate the bwp recaptcha plugin.
    9) Test the logon to the site in the new browser window

      1. Yes, I am still able to use the reCaptcha, I still get the verify select images.

        I have Comment, Registration and Login forms enabled under BWP reCAPT =>General Options =>Main Functionality

        It may depend upon your reCAPTCHA setting. Are using no captcha recaptcha?

        I am not using reCAPTCHA version 1. “Use reCAPTCHA version 1” option is unchecked. I also have the BWP reCAPT =>General Options =>reCAPTCHA Settings =>Request Method set to cURL

        Hope this helps!

  2. Hello,
    My name is Olivier.
    I have exactly same problem . I do not understand how you do this :
    “I tried my test blog without the BWP reCaptcha ”
    I cannot login, so I wonder very hard how you changed some settings.
    Thanks in advance,

    1. Hello Oliver,
      log into cpanel, rename the bwp recaptcha plugin by adding a 1 at the end.

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