Add one nil pointer check to avoid panic

[dengsh12]

Proposed changes

Add one nil pointer check to avoid panic.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING document
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• I have updated any relevant documentation (README.md)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.57%. Comparing base (bb4f6db) to head (21a38b7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #118   +/-   ##
=======================================
  Coverage   76.57%   76.57%           
=======================================
  Files          26       26           
  Lines        1161     1161           
=======================================
  Hits          889      889           
  Misses        216      216           
  Partials       56       56           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.