INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.

I am running PHP Compatibility Checker plugin to make sure that I can upgrade to PHP 7.2 and I am getting the following warnings:

FILE: /home/howtohea/public_html/wp-content/plugins/duplicator/classes/class.server.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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35 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
36 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
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FILE: /home/howtohea/public_html/wp-content/plugins/duplicator/views/tools/diagnostics/inc.settings.php
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FOUND 0 ERRORS AND 4 WARNINGS AFFECTING 2 LINES
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119 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
119 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
120 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
120 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
——————————————————————————————————-

FILE: /home/howtohea/public_html/wp-content/plugins/duplicator/installer/build/classes/class.server.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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45 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
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What should I do about it?
Can I safely upgrade to PHP 7.2? I really need it because my website is too slow and that is one of SiteGround recommendations.

Any help would be greatly appreciated.

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