Reply To: Theme Settings Developer Mode Enabled

We really do not know why you have such an error, we can offer you to hide it via CSS. Try to add the following PHP code snippet to the child theme functions.php file to do this

function woodmart_hide_redux_error() {
  echo '<style>
    .redux-container #redux-header .display_header .redux-dev-mode-notice-container {
      display: none;
    } 
  </style>';
}
add_action( 'admin_head', 'woodmart_hide_redux_error' );

Best Regards