can't convert 'str' object to bytes implicitly

This error occurs when you are trying to concatenate a string and a bytes object without explicitly converting one of them to the other data type.

To fix this error, you can convert the string to bytes using the `encode()` method, or convert the bytes to a string using the `decode()` method.

For example:

string = "Hello"
bytes_obj = b"World"
result = string.encode() + bytes_obj
print(result)

Output:

b'HelloWorld'