Merge pull request #30 from Flowpack/bugfix-no-account-found-in-secur…

…ity-context-causes-crash

BUGFIX: Prevent crash when SecurityContext has no Account

Classes/ContentReleaseManager.php

@@ -144,7 +144,7 @@ private function resolveCurrentContentReleaseId(?string $currentContentReleaseId
 
     private function getAccountId(): ?string
     {
-        if ($this->securityContext->isInitialized()) {
+        if ($this->securityContext->isInitialized() && !is_null($this->securityContext->getAccount())) {
             return $this->securityContext->getAccount()->getAccountIdentifier();
         }