Remove "version" from the info file,

$ phpcs --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml optional_date/

FILE: C:\xampp\htdocs\contribution\web\modules\contrib\optional_date\optional_date.info.yml
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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1 | WARNING | Remove "version" from the info file, it will be added by drupal.org packaging automatically
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