diff --git a/helper.py b/helper.py
index 7aa7559..6e326c8 100644
--- a/helper.py
+++ b/helper.py
@@ -6,46 +6,35 @@ import aiohttp
 import asyncio
 
 async def read_file(path):
-    assert isinstance(path, str), "Path must be a string"
-
     try:
         async with aiofiles.open(path, 'r', encoding='utf-8') as file:
-            content = await file.read()
-        return content
-    except FileNotFoundError:
-        return "Error: File not found."
+            return await file.read()
     except Exception as e:
-        return f"Error: {str(e)}"
+        print(f"Error reading file: {str(e)}")
+        return None
 
 async def get_video_duration_from_file(video_path):
     try:
-        result = await asyncio.create_subprocess_exec(
-            'ffprobe', '-v', 'error', '-show_format', '-show_streams', '-of', 'json', video_path,
+        proc = await asyncio.create_subprocess_exec(
+            'ffprobe', '-v', 'error', '-show_format',
+            '-show_streams', '-of', 'json', video_path,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE
         )
-
-        stdout, stderr = await result.communicate()
-
-        if result.returncode != 0:
+        stdout, stderr = await proc.communicate()
+        if proc.returncode != 0:
             raise Exception(stderr.decode())
-
-        video_info = json.loads(stdout.decode())
-        duration = float(video_info['format']['duration'])
-        return duration
+        return float(json.loads(stdout.decode())['format']['duration'])
     except Exception as e:
-        print(f"Can't fetch Video-Duration: {str(e)}")
-        return 0
+        print(f"Error getting video duration: {str(e)}")
+        return 0.0
 
 async def format_duration(seconds):
-    minutes = seconds // 60
-    seconds = seconds % 60
-    return f"{minutes}:{str(seconds).zfill(2)}"
+    return f"{int(seconds//60)}:{int(seconds%60):02d}"
 
 async def get_file_size(file_path):
     try:
-        stat = await aiofiles.os.stat(file_path)
-        return stat.st_size
+        return os.path.getsize(file_path)
     except Exception as e:
         print(f"Error getting file size: {str(e)}")
         return 0
@@ -54,8 +43,7 @@ async def get_range(file_path, byte_range):
     try:
         async with aiofiles.open(file_path, 'rb') as f:
             await f.seek(byte_range[0])
-            data = await f.read(byte_range[1] - byte_range[0] + 1)
-        return data
+            return await f.read(byte_range[1] - byte_range[0] + 1)
     except Exception as e:
         print(f"Error reading file range: {str(e)}")
         return b''
@@ -64,5 +52,6 @@ async def get_api_key():
     try:
         async with aiofiles.open("token.txt", "r") as f:
             return (await f.read()).strip()
-    except FileNotFoundError:
-        raise FileNotFoundError("Missing token.txt. Please go to README.md")
+    except Exception as e:
+        print(f"Error reading API key: {str(e)}")
+        raise