I cant figure out where is the problem ive done everything correct so far

Your code so far

const myStr = "This is the start. " + "This is the end. "; // Change this line

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Challenge: Concatenating Strings with Plus Operator

Link to the challenge:

In order to pass the test, you have to make sure there is no extra white space at the end of the string.

remove white space from you last string at the end