Help me in solving ADVPPY147 problem

My issue

Error: [Errno 2] No such file or directory: ‘/mnt/codechef/numbers.txt’
Sum: 15

My code

def user_function():
    file_path = "/mnt/codechef/numbers.txt"
    sum_val = 0
    
    try:
        with open(file_path, 'r') as reader:
            for line in reader:
                num = int(line.strip())  # Convert line to integer
                sum_val += num  # Accumulate the sum
        
        print("Sum:", sum_val)  # Print the computed sum
    
    except IOError as e:
        print("Error:", e)  # Print the error message if file operation fails

# Call the function to execute
user_function()

Learning course: Python Programming
Problem Link: Coding problem - 2 in Python Programming