chore: fix warning

[haoxins]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Description:

How do you solve it?

Special notes for your reviewer, ex. impact of this fix, design document, etc:

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 64.92%. Comparing base (9a0ce41) to head (de6d1f5).
Report is 1 commits behind head on master.

Files	Patch %	Lines
session.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #331      +/-   ##
==========================================
- Coverage   64.94%   64.92%   -0.03%     
==========================================
  Files          11       11              
  Lines        2867     2868       +1     
==========================================
  Hits         1862     1862              
- Misses        846      847       +1     
  Partials      159      159              

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