WordPress Indexing Error Resolution

I'm experiencing some troubles with my WordPress website's indexing. There's a specific issue I'm encountering - a server error (5xx).

Key Responsibilities:
- Identify and rectify the server error (5xx)
- Ensure proper functioning of the website's indexing

Ideal skills:
- Proficiency in working with WordPress
- Sound knowledge of indexing and server errors
- Good problem-solving capabilities

Previous experience in resolving similar indexing issues would be beneficial.