Invalid Form Key. Please refresh the page error occur in magento 2

Question

if i try to pay with paytm am getting this error "Invalid Form Key. Please refresh the page error" How do i fix it

Answer 1

You can try by increasing the value of max_input_vars in php.ini file. By default, this value is set to 1000. You should set it to 5000 or 10000.

Then Restart your server and check that process.

Answer 2

Please try the below query

DELETE FROM `core_config_data` WHERE path='web/cookie/cookie_domain';

Then run the below commands via CLI:

sudo php bin/magento cache:flush

sudo php bin/magento cache:clean