PHP 7.2 compatibility

Hi, we would like to ask if plugin is compatible with PHP 7.2, as we where testing it with PHP Compatibility checker and got this errors:

FILE: /home/xxxxxxxxxxxxxx/public_html/wp-content/plugins/linkedin-auto-publish/xyz-functions.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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1 | WARNING | File has mixed line endings; this may cause incorrect results
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FILE: /home/xxxxxxxxxx/public_html/wp-content/plugins/linkedin-auto-publish/admin/ajax-backlink.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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1 | WARNING | File has mixed line endings; this may cause incorrect results
—————————————————————————————

We are migrating to a server that has only PHP 7.1 and 7.2, as other versions are being depreciated.

Thanks for any feedback ??