Custom CSS Editor – PHP Compatibility Checker report

I ran a scan using PHP Compatibility Checker and it generated the following report for compatabilty with PHP7;

Name: Custom CSS

FILE: /home/markkend/public_html/wp-content/plugins/custom-css-editor/fresh-framework/framework/core/wplayer/class.ffWPLayer.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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44 | ERROR | Global with variable variables is not allowed since PHP 7.0
55 | ERROR | Global with variable variables is not allowed since PHP 7.0
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FILE: /home/markkend/public_html/wp-content/plugins/custom-css-editor/fresh-framework/framework/extern/less/lib/Less/Parser.php
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 3 LINES
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454 | WARNING | INI directive ‘mbstring.internal_encoding’ is deprecated since PHP 5.6
455 | WARNING | INI directive ‘mbstring.internal_encoding’ is deprecated since PHP 5.6
462 | WARNING | INI directive ‘mbstring.internal_encoding’ is deprecated since PHP 5.6
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FILE: /home/markkend/public_html/wp-content/plugins/custom-css-editor/fresh-framework/framework/extern/less/lib/Less/SourceMap/Base64VLQ.php
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FOUND 3 ERRORS AFFECTING 1 LINE
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156 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0
156 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0
156 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0
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