@date in docblock generates error in symfony

[andriesvw]

I've installed the LTI-tool-provider under Symfony2. When e.g. ToolConsumer.php is accessed the following error is returned:

"[Semantical Error] The annotation "@Date" in class IMSGlobal\LTI\ToolProvider\ToolConsumer was never imported. Did you maybe forget to add a "use" statement for this annotation?"

[renaatdemuynck]

This is correct. @date is not a valid PHPDoc tag. It should either be removed or replaced by @since.