diff --git a/src/utils/utils.py b/src/utils/utils.py
index c4218cd..e627014 100644
--- a/src/utils/utils.py
+++ b/src/utils/utils.py
@@ -12,6 +12,14 @@ import gradio as gr
 
 from .llm import DeepSeekR1ChatOpenAI, DeepSeekR1ChatOllama
 
+PROVIDER_DISPLAY_NAMES = {
+    "openai": "OpenAI",
+    "azure_openai": "Azure OpenAI",
+    "anthropic": "Anthropic",
+    "deepseek": "DeepSeek",
+    "gemini": "Gemini"
+}
+
 def get_llm_model(provider: str, **kwargs):
     """
     获取LLM 模型
@@ -19,17 +27,19 @@ def get_llm_model(provider: str, **kwargs):
     :param kwargs:
     :return:
     """
+    if provider not in ["ollama"]:
+        env_var = "GOOGLE_API_KEY" if provider == "gemini" else f"{provider.upper()}_API_KEY"
+        api_key = kwargs.get("api_key", "") or os.getenv(env_var, "")
+        if not api_key:
+            handle_api_key_error(provider, env_var)
+        kwargs["api_key"] = api_key
+
     if provider == "anthropic":
         if not kwargs.get("base_url", ""):
             base_url = "https://api.anthropic.com"
         else:
             base_url = kwargs.get("base_url")
 
-        if not kwargs.get("api_key", ""):
-            api_key = os.getenv("ANTHROPIC_API_KEY", "")
-        else:
-            api_key = kwargs.get("api_key")
-
         return ChatAnthropic(
             model_name=kwargs.get("model_name", "claude-3-5-sonnet-20240620"),
             temperature=kwargs.get("temperature", 0.0),
@@ -42,11 +52,6 @@ def get_llm_model(provider: str, **kwargs):
         else:
             base_url = kwargs.get("base_url")
 
-        if not kwargs.get("api_key", ""):
-            api_key = os.getenv("OPENAI_API_KEY", "")
-        else:
-            api_key = kwargs.get("api_key")
-
         return ChatOpenAI(
             model=kwargs.get("model_name", "gpt-4o"),
             temperature=kwargs.get("temperature", 0.0),
@@ -59,11 +64,6 @@ def get_llm_model(provider: str, **kwargs):
         else:
             base_url = kwargs.get("base_url")
 
-        if not kwargs.get("api_key", ""):
-            api_key = os.getenv("DEEPSEEK_API_KEY", "")
-        else:
-            api_key = kwargs.get("api_key")
-
         if kwargs.get("model_name", "deepseek-chat") == "deepseek-reasoner":
             return DeepSeekR1ChatOpenAI(
                 model=kwargs.get("model_name", "deepseek-reasoner"),
@@ -79,10 +79,6 @@ def get_llm_model(provider: str, **kwargs):
                 api_key=api_key,
             )
     elif provider == "gemini":
-        if not kwargs.get("api_key", ""):
-            api_key = os.getenv("GOOGLE_API_KEY", "")
-        else:
-            api_key = kwargs.get("api_key")
         return ChatGoogleGenerativeAI(
             model=kwargs.get("model_name", "gemini-2.0-flash-exp"),
             temperature=kwargs.get("temperature", 0.0),
@@ -114,10 +110,6 @@ def get_llm_model(provider: str, **kwargs):
             base_url = os.getenv("AZURE_OPENAI_ENDPOINT", "")
         else:
             base_url = kwargs.get("base_url")
-        if not kwargs.get("api_key", ""):
-            api_key = os.getenv("AZURE_OPENAI_API_KEY", "")
-        else:
-            api_key = kwargs.get("api_key")
         return AzureChatOpenAI(
             model=kwargs.get("model_name", "gpt-4o"),
             temperature=kwargs.get("temperature", 0.0),
@@ -154,7 +146,17 @@ def update_model_dropdown(llm_provider, api_key=None, base_url=None):
         return gr.Dropdown(choices=model_names[llm_provider], value=model_names[llm_provider][0], interactive=True)
     else:
         return gr.Dropdown(choices=[], value="", interactive=True, allow_custom_value=True)
-        
+
+def handle_api_key_error(provider: str, env_var: str):
+    """
+    Handles the missing API key error by raising a gr.Error with a clear message.
+    """
+    provider_display = PROVIDER_DISPLAY_NAMES.get(provider, provider.upper())
+    raise gr.Error(
+        f"💥 {provider_display} API key not found! 🔑 Please set the "
+        f"`{env_var}` environment variable or provide it in the UI."
+    )
+
 def encode_image(img_path):
     if not img_path:
         return None
diff --git a/webui.py b/webui.py
index c6808ab..f760aab 100644
--- a/webui.py
+++ b/webui.py
@@ -184,6 +184,9 @@ async def run_browser_agent(
             gr.update(interactive=True)    # Re-enable run button
         )
 
+    except gr.Error:
+        raise
+
     except Exception as e:
         import traceback
         traceback.print_exc()
@@ -535,6 +538,12 @@ async def run_with_stream(
             try:
                 result = await agent_task
                 final_result, errors, model_actions, model_thoughts, latest_videos, trace, history_file, stop_button, run_button = result
+            except gr.Error:
+                final_result = ""
+                model_actions = ""
+                model_thoughts = ""
+                latest_videos = trace = history_file = None
+
             except Exception as e:
                 errors = f"Agent error: {str(e)}"