Need Help to find the exact plugin

Friends,
I am developing an app which previously done by one programmer. When I try to run a page I got error as

which says Barcodescanner plugin is missing. On searching I hope the plugin mentioned in URL:
Plugin URL
is enough. Please advise is this exact one ?

Waiting your fast reply

Thanks

Anes

Hello,

do as describted.

Best regards, anna-liebt

Problem is fixed with

npm install

Thanks alot @anna_liebt

Anes