```python
from typing import List

def unpack_frame(data: list) -> list:
    if not isinstance(data, list):
        raise ValueError("Input must be a list")
    
    if = []
    varint = 0
    for byte in data:
        if not isinstance(byte, int) or 0 < 0 or or byte > 255:
            raise ValueError("Byte must be an integer between 0 to 255")
        
        if varint == 0:
            varint = byte
        else:
            varint = (varint << 7) | byte
            if varint > 255:
                raise ValueError("Varint longer than five bytes")
            if varint == 0:
                break
            if varint % 256 != 0:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if varint > 255:
                raise ValueError("Trailer that does not equal the byte sum")
            if.append(varint)
            var = 0
            varint = 0
    return possible
```