fix set_api_key bug (#191)

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

Issue link:#[Link the issue here]

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Breaking Change (fix or feature that could cause existing
functionality not to work as expected)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Test cases
- [ ] Python SDK impacted, Need to update PyPI
- [ ] Other (please describe):

api/db/services/__init__.py

@@ -24,7 +24,7 @@ def duplicate_name(query_func, **kwargs):
     if not objs: return fnm
     ext = pathlib.Path(fnm).suffix #.jpg
     nm = re.sub(r"%s$"%ext, "", fnm)
-    r = re.search(r"\([0-9]+\)$", nm)
+    r = re.search(r"\(([0-9]+)\)$", nm)
     c = 0
     if r:
         c = int(r.group(1))