Spaces in author name causes 500 Error in suggestions/author endpoint

[bilalesi]

Description:
When making a request to /api/literature/suggestions/author, spaces in the name parameter cause a 500 error. For example:
• /api/literature/suggestions/author?name=jing%20yuan&limit=100 returns a 500 error.
• /api/literature/suggestions/author?name=jing&limit=100 works correctly.

Adding a space (e.g., “jing y”) triggers the issue. This appears to be related to how spaces in the name parameter are handled.

Steps to Reproduce:
1. Make a request to /api/literature/suggestions/author with a name containing a space (e.g., jing yuan).
2. Observe the 500 error response.

Expected Behavior:
The API should handle spaces in the name parameter and return suggestions as expected.

Actual Behavior:
The API returns a 500 error when spaces are included in the name parameter.

Additional Context:
This might be related to encoding or input sanitization issues.