I don't know what caused it, but it happens when there is a problem with a file in maven's local repository. The solution was to delete the 2.5.3 directory and download it again.
Description Path Resource Location Type
Archive for required library: '/Users/user/.m2/repository/org/codehaus/groovy/groovy/2.5.3/groovy-2.5.3.jar' in project 'backoffice' cannot be read or is not a valid ZIP file backoffice Build path Build Path Problem