fix out of range panic

[AdamKorcz]

Before submitting your PR, please confirm the following.

This fixes an out of range panic.

• [x] Describe the purpose for which you created this PR.
• [] Create test code that corresponds to the modification

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.77%. Comparing base (237df0e) to head (ac805ee). Report is 1 commits behind head on master.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #467   +/-   ##
=======================================
  Coverage   78.77%   78.77%           
=======================================
  Files          13       13           
  Lines        4004     4004           
=======================================
  Hits         3154     3154           
  Misses        591      591           
  Partials      259      259           

[goccy]

This problem has already been fixed with latest release. Thank you.