Changing ILM to non-ILM status throws 500 error

[saschaben]

while the call appears to be fully functioning to destroy the ilm_session_facet entry when you try to turn an ILM into a non-ILM, it returns a 500 error to the user:

{code: 500, message: "Internal Server Error"}
code: 500
message: "Internal Server Error" 

Thinking since this is on a session based PUT that it might be due to trying to re-save the session, rather than just deleting the ilm_session_facet...

[stopfstedt]

seems to be two separate operations:

DELETE /api/v1/ilmsessions/1980 204 186.875 ms - 0
PUT /api/v1/sessions/26561 500 2193.164 ms - 46

from the error logs:

[2016-01-19 18:29:53] request.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\ContextErrorException: "Catchable Fatal Error: Argument 1 passed to Ilios\CoreBundle\Entity\Session::setIlmSession() must implement interface Ilios\CoreBundle\Entity\IlmSessionInterface, null given, called in /vagrant/vendor/symfony/symfony/src/Symfony/Component/PropertyAccess/PropertyAccessor.php on line 502 and defined" at /vagrant/src/Ilios/CoreBundle/Entity/Session.php line 390 {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\ContextErrorException(code: 0): Catchable Fatal Error: Argument 1 passed to Ilios\\CoreBundle\\Entity\\Session::setIlmSession() must implement interface Ilios\\CoreBundle\\Entity\\IlmSessionInterface, null given, called in /vagrant/vendor/symfony/symfony/src/Symfony/Component/PropertyAccess/PropertyAccessor.php on line 502 and defined at /vagrant/src/Ilios/CoreBundle/Entity/Session.php:390)"} []