Hey there i am getting chunk size greater then the file size in the headers?

Hello, developers, there is a strange problem that I am facing right now which is when I try to get the range from the header I am getting the total size. I don’t know how it is possible and why this is happening here Is a small portion of my code please help me if anyone knows anything about this :

range_header = request.headers.get("Range") start, end = range_header.split("=")[1].split("-")

Also, i am using so many conditions and if else statements just to be clear if somehow the start is empty then set it to 0 and end to totalSize - 1 and check this code below i know it is not a proper way of writing the code but I do this to solve this issue :

if range_header:
print(f"Range : {range_header}")

    try:
        start, end = range_header.split("=")[1].split("-")
    except:
        start = 0
        end = fileSize - 1
    try:
        start = int(start)
    except:
        start = 0
    try:
        end = int(end)
    except:
        end = fileSize - 1

    requested_chunk_size = end - start + 1
else:
    start = 0
    requested_chunk_size = fileSize
    end = fileSize - 1
try:
    int(end)
except:
    end = fileSize - 1
try:
    int(requested_chunk_size)
except:
    requested_chunk_size = fileSize
try:
    int(start)
except:
    start = 0

headers = {
    "Content-Type": mimeType,
    "Content-Disposition": condisp,
    "Content-Length" : str(fileSize),
    "Cache-Control" : "no-store",
    "Accept-Ranges" : "bytes",
    "Content-Range" : f"bytes {start}-{end}/{requested_chunk_size}"
}
print(f">>>>> Mime Type : {mimeType} : Content-Range : {start}-{end}/{requested_chunk_size}")
response = await request.respond(content_type=mimeType, headers=headers)
if start + end > requested_chunk_size:
    start = 0
    end = requested_chunk_size - 1
    requested_chunk_size = fileSize
    headers["Content-Range"] = f"bytes {start}-{end}/{requested_chunk_size}"
if range_header:
        print(f"Range : {range_header}")

        try:
            start, end = range_header.split("=")[1].split("-")
        except:
            start = 0
            end = fileSize - 1
        try:
            start = int(start)
        except:
            start = 0
        try:
            end = int(end)
        except:
            end = fileSize - 1

        requested_chunk_size = end - start + 1
    else:
        start = 0
        requested_chunk_size = fileSize
        end = fileSize - 1
    try:
        int(end)
    except:
        end = fileSize - 1
    try:
        int(requested_chunk_size)
    except:
        requested_chunk_size = fileSize
    try:
        int(start)
    except:
        start = 0

    headers = {
        "Content-Type": mimeType,
        "Content-Disposition": condisp,
        "Content-Length" : str(fileSize),
        "Cache-Control" : "no-store",
        "Accept-Ranges" : "bytes",
        "Content-Range" : f"bytes {start}-{end}/{requested_chunk_size}"
    }
    print(f">>>>> Mime Type : {mimeType} : Content-Range : {start}-{end}/{requested_chunk_size}")
    response = await request.respond(content_type=mimeType, headers=headers)
    if start + end > requested_chunk_size:
        start = 0
        end = requested_chunk_size - 1
        requested_chunk_size = fileSize
        headers["Content-Range"] = f"bytes {start}-{end}/{requested_chunk_size}"

And If the total file size is smaller then added size of the start and end then i am setting it to 0 and fileSize - 1 and then i am getting this error :

[2024-03-24 12:18:05 +0000] [20321] [ERROR] The response object returned by the route handler will not be sent to client. The request has already been responded to.
[2024-03-24 12:18:05 +0000] [20321] [ERROR] Response was smaller than content-length
Traceback (most recent call last):
  File "handle_request", line 135, in handle_request
    Sanic("This is not legal")
  File "/usr/local/lib/python3.9/dist-packages/sanic/response/types.py", line 139, in send
    await self.stream.send(
  File "/usr/local/lib/python3.9/dist-packages/sanic/http/http1.py", line 397, in http1_response_normal
    raise ServerError("Response was smaller than content-length")
sanic.exceptions.ServerError: Response was smaller than content-length

Could anyone please help to solve this issue?