Simple Excel Question: VLookup Error

My data looks like this:

Why is this error showing up?

For example, if you imagine that the grey shading used in codeblocks on StackExchange represents the whitespaces in your Excel cells, then AK is technically the same as
AK

=VLOOKUP(CONCATENATE("*",TRIM(A2),"*"), $E$2:$F$5, 2,FALSE)