human
Solve the following python programming problem given the following code:
def catch(self, * exceptions) : 
    assert self, 'at least one exception type is required' 
    def decorator(func) : 
        @ wraps (func) 
        def wrapper(* args, **kwargs) : 
            try : 
                return func (* args, ** kwargs) 
except self.error : 
                raise 
except exceptions as e : 
                error_name = camel_to_underscores (e.__class__.__name__) 
                error_text = (e.args [0] if e.args else '') 
                raise self.error (error_name, error_text = error_text) 
return wrapper 
return decorator 

    
    

    Fix the buggy line: assert self, 'at least one exception type is required'
assistant
#Here is Python program to fix the buggy line: assert self, 'at least one exception type is required'
.

assert exceptions, 'at least one exception type is required'