Array and string offset access syntax with curly braces is no longer supported in docroot/sites/all/modules/contrib/barcode/includes/barcode.plugins.inc on line 116

This module is no longer supported and won't be ported to Drupal 8/9/10+. Please consider switching to use https://www.drupal.org/project/barcodes → instead.

I maintain both module. If there is a feature from this old module (Barcode) that you need in the new module (Barcodes) then please open a feature request in the issue queue at https://www.drupal.org/project/issues/barcodes →