The ZfcUser\Authentication\Adapter\Db uses the request passed into the AuthenticationEvent. Which is defined as an Zend\Stdlib\RequestInterface type. However this interface doesn't support the method getPost() called on line 62 and 63 of the ZfcUser\Authentication\Adapter\Db. Allowed methods should are:
In 2.x we should probably not push the request through the event. Make extracting the required data from user input the responsibility of the code trigger the authentication request.
The ZfcUser\Authentication\Adapter\Db uses the request passed into the AuthenticationEvent. Which is defined as an Zend\Stdlib\RequestInterface type. However this interface doesn't support the method getPost() called on line 62 and 63 of the ZfcUser\Authentication\Adapter\Db. Allowed methods should are:
Not sure how this should be altered.
See https://github.com/ZF-Commons/ZfcUser/blob/master/src/ZfcUser/Authentication/Adapter/Db.php#L62