Have you seen this error message when activating a plugin?

It is a UTF8 related issue. Solution: download Notepad++ and edit the file and select Encoding > Encode in UTF8 (without BOM).

Fix for The plugin generated 3 characters of unexpected output during activation. If you notice “headers already sent”

Fix for The plugin generated 3 characters of unexpected output during activation. If you notice “headers already sent”

Related/Credit

Plugin activation error: The plugin generated 3 characters of unexpected output during activation. If you notice “headers already sent”

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