Log why the login token can't be used for credentials

And always pass the exception object to the logger.

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Author: ChristophWurst

lib/private/Authentication/LoginCredentials/Store.php

@@ -98,12 +98,12 @@ public function getLoginCredentials(): ICredentials {
 
 			return new Credentials($uid, $user, $password);
 		} catch (SessionNotAvailableException $ex) {
-			$this->logger->debug('could not get login credentials because session is unavailable', ['app' => 'core']);
+			$this->logger->debug('could not get login credentials because session is unavailable', ['app' => 'core', 'exception' => $ex]);
 		} catch (InvalidTokenException $ex) {
-			$this->logger->debug('could not get login credentials because the token is invalid', ['app' => 'core']);
+			$this->logger->debug('could not get login credentials because the token is invalid: ' . $ex->getMessage(), ['app' => 'core', 'exception' => $ex]);
 			$trySession = true;
 		} catch (PasswordlessTokenException $ex) {
-			$this->logger->debug('could not get login credentials because the token has no password', ['app' => 'core']);
+			$this->logger->debug('could not get login credentials because the token has no password', ['app' => 'core', 'exception' => $ex]);
 			$trySession = true;
 		}