Order status Pending

Hey,

I had issue from order status is pending and after some time order cancelled.

Paypal Procedure all completed work.

Give Error Log in Woo Log File Like:

1) Generating payment form for order 13739. Notify URL: https://www.itsguru.com/wc-api/WC_Gateway_Paypal/

2) PayPal Request Args for order 13739: cmd=_cart&business=patel-facilitator%40itsguru.com&no_note=1&currency_code=USD&charset=utf-8&rm=2&upload=1&return=https%3A%2F%2Fwww.itsguru.com%2Fcheckout%2Forder-received%2F13739%3Fkey%3Dwc_order_58b110d4a5883%26utm_nooverride%3D1&cancel_return=https%3A%2F%2Fwww.itsguru.com%2Fcart%2F%3Fcancel_order%3Dtrue%26order%3Dwc_order_58b110d4a5883%26order_id%3D13739%26redirect&page_style=&paymentaction=sale&bn=WooThemes_Cart&invoice=TP-13739&custom=%7B%22order_id%22%3A13739%2C%22order_key%22%3A%22wc_order_58b110d4a5883%22%7D&notify_url=https%3A%2F%2Fwww.itsguru.com%2Fwc-api%2FWC_Gateway_Paypal%2F&first_name=Himanshu&last_name=Patel&company=Hrpsoftware&address1=bajwa&address2=&city=Baroda&state=Gujarat&zip=391530&country=IN&email=andypatel877%40gmail.com&night_phone_b=1234567890&day_phone_b=1234567890&no_shipping=1&tax_cart=0.00&item_name_1=TweetShare+Pro&quantity_1=1&amount_1=18&item_number_1=

Thanks!