Merge pull request #251 from FlorianWege-IESE/AuthorizationDynamicClassLoader-fix-exception-message

Fix exception message AuthorizationDynamicClassLoader

Author: FrankSchnicke

basyx.components/basyx.components.lib/src/main/java/org/eclipse/basyx/components/security/authorization/internal/AuthorizationDynamicClassLoader.java

@@ -66,7 +66,7 @@ public static <T> T loadInstanceDynamically(final BaSyxConfiguration config, fin
 			final String effectiveClassName = classesBySimpleNameMap.getOrDefault(className, className);
 
 			if (effectiveClassName == null) {
-				throw new IllegalArgumentException("granted authority subject information provider class is null");
+				throw new IllegalArgumentException(String.format("property %s does not exist or class name obtained from config property (%s) is null", propertyName, className));
 			}
 
 			final Class<?> clazz = Class.forName(effectiveClassName);