Drupal Association members fund grants that make connections all over the world.
Although this is just an notice and doesn't affect the payment process, but raises the "access denied error" which may mislead the end user.
Notice: Undefined index: checkout_page in commerce_paypal_ec_review_pane_checkout_form_submit() (line 188 of /home/nithu/public_html/ps2html.org/public/sites/all/modules/commerce_paypal/modules/ec/includes/commerce_paypal_ec.checkout_pane.inc
This happens when billing information is entered at Paypal instead of on-site checkout form(which is working fine).
option "Update billing customer profiles with address information the customer enters at PayPal." is enable in EC configuration.After payment , when paypal returns to checkout page only Name and Country is showing in billing information pane.