1 files changed, 9 insertions, 7 deletions

diff --git a/g4f/Provider/GeminiPro.py b/g4f/Provider/GeminiPro.py
index 792cd5d1..87ded3ac 100644
--- a/g4f/Provider/GeminiPro.py
+++ b/g4f/Provider/GeminiPro.py
@@ -32,17 +32,20 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
         model = "gemini-pro-vision" if not model and image else model
         model = cls.get_model(model)
 
-        if not api_key and not api_base:
-            raise MissingAuthError('Missing "api_key" or "api_base"')
+        if not api_key:
+            raise MissingAuthError('Missing "api_key"')
         if not api_base:
             api_base = f"https://generativelanguage.googleapis.com/v1beta"
 
         method = "streamGenerateContent" if stream else "generateContent"
         url = f"{api_base.rstrip('/')}/models/{model}:{method}"
-        if api_key:
+        headers = None
+        if api_base:
+            headers = {f"Authorization": "Bearer {api_key}"}
+        else:
             url += f"?key={api_key}"
 
-        async with ClientSession() as session:
+        async with ClientSession(headers=headers) as session:
             contents = [
                 {
                     "role": "model" if message["role"] == "assistant" else message["role"],
@@ -79,12 +82,11 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
                             lines = [b"{\n"]
                         elif chunk == b",\r\n" or chunk == b"]":
                             try:
-                                data = b"".join(lines)
-                                data = json.loads(data)
+                                data = json.loads(b"".join(lines))
                                 yield data["candidates"][0]["content"]["parts"][0]["text"]
                             except:
                                 data = data.decode() if isinstance(data, bytes) else data
-                                raise RuntimeError(f"Read chunk failed. data: {data}")
+                                raise RuntimeError(f"Read chunk failed: {data}")
                             lines = []
                         else:
                             lines.append(chunk)