concrete\package\vividstore\src\attribute\key\storeorderkey::getbyhandle($ak) not recognize in concrete5.7 after upgrading php

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I m using Linux based shared server ,website was working fine but after upgrading php my checkout process not completed .I reached at point that concrete\package\vividstore\src\attribute\key\storeorderkey::getbyhandle($ak) not recognize in concrete5.7 after upgrading php
Concrete\Package\VividStore\Src\VividStore\Orders file don't recognize storeorderkey::getbyhandle($ak) method
anybody have any idea?
Thanks

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muhammadaley replied on at Permalink Reply
Hope someone helps you
hutman replied on at Permalink Reply
hutman
Depending upon what version of concrete5 and Vivid Store you are using, you likely upgraded PHP beyond the capabilities.

You can see here - https://documentation.concrete5.org/developers/introduction/system-r...

That v5.7 only supports PHP 7.1, no higher.