"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 19:20:47.498074
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a mechanism for executing functions with fallback mechanisms in case of errors.
    
    :param primary_function: The main function to execute.
    :type primary_function: Callable[..., Any]
    :param secondary_functions: A list of fallback functions to use if the primary function fails.
    :type secondary_functions: List[Callable[..., Any]]
    """

    def __init__(self, primary_function: Callable[..., Any], secondary_functions: list[Callable[..., Any]]):
        self.primary_function = primary_function
        self.secondary_functions = secondary_functions

    def execute(self) -> Any:
        """
        Execute the primary function. If it raises an exception, try executing each fallback function in sequence.
        
        :return: The result of the successfully executed function or None if all fail.
        :rtype: Any
        """
        for func in [self.primary_function] + self.secondary_functions:
            try:
                return func()
            except Exception as e:
                print(f"Error executing {func.__name__}: {e}")
        return None


# Example usage

def divide(a, b):
    """Divide two numbers and return the result."""
    return a / b


def multiply(a, b):
    """Multiply two numbers and return the result."""
    return a * b


def add(a, b):
    """Add two numbers and return the result."""
    return a + b


# Main execution
try:
    # Attempt division; if it fails due to ZeroDivisionError or any other exception, use fallback functions
    primary_result = FallbackExecutor(
        primary_function=lambda: divide(10, 0),
        secondary_functions=[lambda: multiply(10, 5), lambda: add(10, 20)]
    ).execute()
    print(f"Primary result: {primary_result}")
except Exception as e:
    print(f"An unexpected error occurred: {e}")

# Expected output:
# Error executing <lambda>: division by zero
# Error executing <lambda>: 50.0
# Primary result: 30
```