Fix PHP warning#796

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selul merged 3 commits intodevelopmentfrom

May 25, 2021

Commits on Apr 26, 2021

Fix PHP 8 warning #795
girishpanchal30
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Commits on May 4, 2021

Fix undefined array index warning in PHP 8 #795
girishpanchal30
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Merge branch 'development' of https://github.com/Codeinwp/visualizer into bugfix/795
girishpanchal30
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