diff --git a/free_one_api/impls/adapter/gpt4free.py b/free_one_api/impls/adapter/gpt4free.py
index c9bd6c4..55754e7 100644
--- a/free_one_api/impls/adapter/gpt4free.py
+++ b/free_one_api/impls/adapter/gpt4free.py
@@ -145,7 +145,8 @@ async def _select_provider(self):
                                         "role": "user",
                                         "content": "Hi, My name is Rock."
                                     }
-                                ]
+                                ],
+                                timeout=120
                             )
                             async for _ in resp:
                                 pass
@@ -194,7 +195,8 @@ async def query(self, req: request.Request) -> typing.AsyncGenerator[response.Re
         else:
             resp = provider.create_async_generator(
                 model=req.model,
-                messages=req.messages
+                messages=req.messages,
+                timeout=120
             )
         
         if isinstance(resp, typing.Generator):
diff --git a/free_one_api/impls/app.py b/free_one_api/impls/app.py
index 0aad112..f4f9836 100644
--- a/free_one_api/impls/app.py
+++ b/free_one_api/impls/app.py
@@ -43,6 +43,8 @@ class Application:
     
     watchdog: wdmgr.AbsWatchDog
     
+    logging_level: int = logging.INFO
+    
     def __init__(
         self,
         dbmgr: db.DatabaseInterface,
@@ -50,12 +52,14 @@ def __init__(
         channel: chanmgr.AbsChannelManager,
         key: keymgr.AbsAPIKeyManager,
         watchdog: wdmgr.AbsWatchDog,
+        logging_level: int = logging.INFO,
     ):
         self.dbmgr = dbmgr
         self.router = router
         self.channel = channel
         self.key = key
         self.watchdog = watchdog
+        self.logging_level = logging_level
         
     async def run(self):
         """Run application."""
@@ -124,12 +128,15 @@ async def make_application(config_path: str) -> Application:
         
     if 'DEBUG' in os.environ and os.environ['DEBUG'] == 'true':
         logging_level = logging.DEBUG
-        
+    
+    print("Logging level:", logging_level)
+    logging.debug("Debug mode enabled.")
+    
     terminal_out = logging.StreamHandler()
     
     terminal_out.setLevel(logging_level)
     terminal_out.setFormatter(colorlog.ColoredFormatter(
-        "[%(asctime)s.%(msecs)03d] %(log_color)s%(filename)s (%(lineno)d) - [%(levelname)s] : "
+        "[%(asctime)s.%(msecs)03d] %(log_color)s%(pathname)s (%(lineno)d) - [%(levelname)s] :\n"
             "%(message)s",
         datefmt="%Y-%m-%d %H:%M:%S",
         log_colors=log_colors_config,
@@ -163,7 +170,8 @@ async def make_application(config_path: str) -> Application:
     # database handler
     dblogger = log.SQLiteHandler(dbmgr)
     
-    dblogger.setLevel(logging_level)
+    # failed to set debug level for db handler
+    dblogger.setLevel(logging.INFO if logging_level <= logging.INFO else logging_level)
     dblogger.setFormatter(logging.Formatter("[%(asctime)s.%(msecs)03d] %(pathname)s (%(lineno)d) - [%(levelname)s] :\n%(message)s"))
     
     logging.getLogger().addHandler(dblogger)
@@ -233,6 +241,7 @@ async def make_application(config_path: str) -> Application:
         channel=channelmgr,
         key=apikeymgr,
         watchdog=wdmgr,
+        logging_level=logging_level,
     )
     
     logging.info("Application initialized.")
diff --git a/free_one_api/impls/forward/mgr.py b/free_one_api/impls/forward/mgr.py
index 2b09f95..b3f2f9e 100644
--- a/free_one_api/impls/forward/mgr.py
+++ b/free_one_api/impls/forward/mgr.py
@@ -76,6 +76,9 @@ async def _gen():
                         "param": e.param,
                     }
                 }))
+            except Exception as e:
+                logging.warning("Exception should be processed by adapter but caught by forward manager:")
+                logging.error(e)
         
         spent_ms = int((time.time() - before)*1000)
         
diff --git a/free_one_api/models/forward/mgr.py b/free_one_api/models/forward/mgr.py
index 4b7f553..a5ee589 100644
--- a/free_one_api/models/forward/mgr.py
+++ b/free_one_api/models/forward/mgr.py
@@ -29,7 +29,7 @@ class AbsForwardManager(metaclass=abc.ABCMeta):
     """API key manager."""
     
     @abc.abstractmethod
-    def query(
+    async def query(
         self,
         path: str,
         req: request.Request,
diff --git a/main.py b/main.py
index c1e5dae..66a415e 100644
--- a/main.py
+++ b/main.py
@@ -15,6 +15,7 @@ def main():
     
     application = loop.run_until_complete(app.make_application("./data/config.yaml"))
 
+    logging.getLogger().setLevel(application.logging_level)
     loop.run_until_complete(application.run())
 
 if __name__ == "__main__":