Fix 404 Error on My Homepage

I am encountering a 404 Not Found Error on my website's homepage. This issue has come up recently, within the last week. It's critical to resolve this problem as soon as possible to ensure my site remains accessible to users.

Ideal Skills and Experience:
- Proficient in web development with experience in debugging and resolving errors.
- Familiarity with handling 404 Not Found Errors.
- Ability to work swiftly and efficiently to minimize downtime.