Syntax Errors :: 0x00

This book begins with the classic first program found in beginner's programming tutorials, and yet true to its own name, there's already a (fairly obvious) bug within it.

puts "Hello World'

What simple fix is needed to prevent this program from crashing?

[ANSWER] To reveal the answer, hover or tap on this box and then click the eye icon.

 The quotes are mismatched (opens with a double quote, closes with a single quote)

 Changing the string to either "Hello World" or 'Hello World' would fix things.

Related Notes :: 0xF000 | 0xF001 | 0xF002