Fatal error: Invalid refresh token

  • Hello,

    PHP is showing the error message in the front-end:

    Fatal error: Uncaught Exception: Invalid refresh token in plugins/mailup-email-and-newsletter-subscription-form1/includes/class-mailup-requests.php on line 311

    In MailUp Settings (admin panel) shows “Invalid refresh token”.

    I have disabled all other plugins and tested with Twenty Twenty One theme.

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Viewing 6 replies - 1 through 6 (of 6 total)
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