Please have a look at the following.
Notice: Undefined index: payment_option in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 79
Notice: Undefined index: card_type in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 80
Notice: Undefined index: card_name in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 81
Notice: Undefined index: data_accept in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 82
Notice: Undefined index: card_number in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 83
Notice: Undefined index: expiry_month in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 84
Notice: Undefined index: expiry_year in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 85
Notice: Undefined index: cvv_number in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 86
Notice: Undefined index: issuing_bank in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 87
Edit:
Also,
Notice: Undefined variable: the_display_msg in /home/bhartiwe/public_html/astropoint/wp-content/plugins/ccavanue-woocommerce-payment-getway/index.php on line 436
https://wordpress.org/plugins/ccavanue-woocommerce-payment-getway/