Search API returns 500 for valid tag queries on /api/v1/search/compounds

[NishaSharma14]

Describe the bug
Search API returns a 500 Internal Server Error when querying valid tags in compound search.

To Reproduce
Steps to reproduce the behavior:

1. Send a POST request to /api/v1/search/compounds
2. Use headers:
   • accept: application/json
   • content-type: application/json
3. Use query parameters including tagType=chemical_class (with pagination/sort as needed)
4. Use request body:

{
  "query": "Hypoxia",
  "type": "tags"
}

5. Observe server response

Expected behavior
The API should return successful search results (or a handled empty result) for valid tag queries instead of a 500 error.

Screenshots