fix(example): repair simple example codes cause panic

[LinPr]

Issue: #72
I found the error in /example/simple.go and fix the codes that cause panic , and made this PR

[noneback]

Thanks for fixing it.

Can you change the commit message style? We should have a coherent way of using commit messages.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.75%. Comparing base (67b2e67) to head (c58bbf5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #73   +/-   ##
=======================================
  Coverage   86.75%   86.75%           
=======================================
  Files          13       13           
  Lines         717      717           
=======================================
  Hits          622      622           
  Misses         73       73           
  Partials       22       22           

Flag	Coverage Δ
unittests	86.75% <ø> (ø)

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[LinPr]

Thanks for fixing it.

Can you change the commit message style? We should have a coherent way of using commit messages.

Okay I will do it soon,thanks for replying

[noneback]

Please verify your signature. Try git commit -S -m "YOUR_COMMIT_MESSAGE"

[Copilot]

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.