It expected the first letter of "have" to be capilalised. "Have" -> "#DoWeHaveAHashtag"

JavaScript: failure messages are confusing and extremely unhelpful. For example, one of assertions complains about a missing # character while it checks something totally different.

They are not the same, but the message is confusing because the problem is not in the hash character:

Expected a Hashtag (#) at the beginning.:
expected '#DoWehaveAHashtag'
to equal '#DoWeHaveAHashtag' 
               ^

I got this output while doing all the tasks of this problem:
Expected a Hashtag (#) at the beginning.: expected '#DoWehaveAHashtag' to equal '#DoWeHaveAHashtag'
I don't understand the error; expected and equal is the same...

Please see this link and this link.

I have the same result as expected with different attemps, however, when I tried the test always shows (expected undefined to equal). I am not sure what it actually means.
I check the documentation when it looks exactly as the result but I couldnt figure it out either.
Any advice?
Many thanks in advance :)

Pay Attention To The Numbers In Your Life They Are Vastly Important.

expected undefined to equal 'Pay Attention To The Numbers In Your Life They Are Vastly Important.'