- fix NULL log file path handling

src/agent_config.py

@@ -99,7 +99,7 @@ class AgentConfig:
 
                 if 'path' in config['log']:
                     path = config['log']['path']
-                    if len(path) > 0:
+                    if path is not None and len(path) > 0:
                         path = Path(path)
                         if not path.is_absolute():
                             path = Path(__file__).parent.parent / path
@@ -125,4 +125,4 @@ class AgentConfig:
             if 'task' in config:
                 self.TaskName = config['task']
 
-            
+