Why do i get this error?

Hello everyone, i tried to build my game for multi Android and after like 4 hours of waiting i get this joy …
Why do i get this error? Shouldn’t the Package name BE in that format? It sais so when i hover over it … and everybody has it like that in all the tutorials i saw … so why is mine giving me an error ?

Hi! Remove braces! Package name in common case is just words with dot delimiters. See, for example com.adobe.photoshop
(get from naming - Android - Package Name convention - Stack Overflow)

thank you very much