When you post code, compiler error messages or serial monitor output to the forum you need to put triple backticks at the beginning and end of the code etc to ensure that it displays correctly.
Triple backticks look like this:
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As far as your compilation error is concerned, you should read this link:
In future, it would probaly help if you did a quick search of the forum before posting your problem, as there’s a good chance that the answer is already available to you.