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There are 13 error identifiers in the interface.* group:

• AllowDynamicProperties attribute cannot be used on interfaces.

• Native #[Deprecated] attribute cannot be used on interfaces.

• Interface extends a sealed interface that does not allow this subtype.

• Same interface is declared in multiple files.

• Interface declares the same constant name more than once.

• Interface declares the same method name more than once.

• Interface declares the same property name more than once.

• Interface extends a deprecated interface.

• Interface extends another interface marked as @internal.

• Interface is referenced with incorrect letter casing.

• Interface name conflicts with an existing use import or declaration.

• Extended interface does not exist.

• Interface uses a trait, which is not allowed in PHP.