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I am using wordpress 5 and WooCommerce Version: 3.5.4, for payment gateway i am using 'Paytm'. I set all the required filed as per paytm instruction, but getting error 'Security Error. Checksum Failed!!' .

Please help

Vipul Rai
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  • Did you get the plugin from a legitimate place? I would not use what you have now as that suggestes that the one you have has been changed, and probably not for a good reason **There be dragons** – RiggsFolly Mar 25 '19 at 11:00

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Download the official Paytm plugin for WooCommerce which is listed here Looks like you're using the one in WordPress repository which isn't official & hence failing security check

ph33nx
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  • I am also facing the same issue with my WordPress website. "?paytm_response=Security+Error.+Checksum+Failed%21%21&type=error". i am using latest version of Paytm(https://github.com/Paytm-Payments/Paytm_Woocommerce_Kit) and WooCommerce – Vikas Ck Jun 13 '19 at 12:43