Error in 1.1.4

[glup4711]

/var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/lib/pdfbeads/pdfpage.rb:231:in `processMixed': undefined method `exists?' for File:Class (NoMethodError)

      if not File.exists? binpath or force
                 ^^^^^^^^
Did you mean?  exist?
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/lib/pdfbeads/pdfpage.rb:90:in `fillStencilArray'
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/lib/pdfbeads/pdfpage.rb:420:in `block in initialize'
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/lib/pdfbeads/pdfpage.rb:417:in `each'
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/lib/pdfbeads/pdfpage.rb:417:in `initialize'
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/bin/pdfbeads:219:in `new'
	from /var/lib/gems/3.2.0/gems/pdfbeads-1.1.4/bin/pdfbeads:219:in `<top (required)>'
	from /usr/local/bin/pdfbeads:25:in `load'
	from /usr/local/bin/pdfbeads:25:in `<main>'