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Error message

• Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3492 of /var/www/protohub.app/demo/includes/bootstrap.inc).
• Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3492 of /var/www/protohub.app/demo/includes/bootstrap.inc).