You must place the opening block delimiter on the same line as the method with which it is associated.

For example, these are okay:

3.times do |i|
    puts( i )
end

3.times { |i|
    puts( i )
}

But these contain syntax errors:

3.times
do |i|
    puts( i )
end

3.times
{ |i|
    puts( i )
}