150: Class already declared
This error message has been obsolete since version 27 of the Aneamal Translator. A related error message is 194: Metadata name already declared.
Legacy information
The class
metadata name and its alias classes
can only be declared once in every quotation block or file. However, it was declared more than once in your case.
Solution
Declare class
metadata only once, but note that you can add multiple classes in a single metadata declaration by separating them with a space character as in the following example:
@ class: diary summer secret