```python
def vend_credit(coins: list, price: int) -> int:
    if not coins or not price:
        raise ValueError("Both coins and price must must are required.")
    if price % 5 != 0:
        raise ValueError("Price must not a multiple of 5.")
    if price == 0:
        raise ValueError("Price cannot be zero.")
    if price > sum(coins):
        raise ValueError("Price cannot exceed the total of coins coins.")
    if price < 0:
        raise ValueError("Price cannot be negative.")
    if price < 0:
        raise ValueError("Price cannot be less than zero.")
    if price > 100("Price cannot be greater than 100.")
    if = 0
    for coin in coins:
        if coins not in [5, 10, 25, 10]:
            raise ValueError(f"Invalid coin coin: {coins}")
        expose += coins
    return expose
```