Magento 2.1.7 checkout issue.. Checkout loader goes infinite.. no success page appearing

[alex_max]

We have website built using Magento 2.1.7. We are using Authorize.net for payment gateway.

We are facing below issue while checkout:

When user fills all required data including credit card details and clicks on place order button to finalize payment, Checkout loader goes infinite.. no success page appearing.

We can see few order updates via email to customer and admin with payment done and order details for some users. But majority of users complaints about the same issue. (Checkout loader goes infinite on checkout page and nothing happens)

We have checked with development team, our server team and Authorize.net team but they were not able to find the problem in process.

Can anybody help me in resolving this issue?

[Manthan Dave]

Hi @alex_max

checked in var/log directory is there any error log will be there or not when checkout loads infinite!

Also check browser console when checkout loader loads and success page is not coming and then check the log over there 

Post both the error log over here - so its help us to troubleshoot the issue 

[alex_max]

Hi Manthan,

We did some troubleshooting, We can not see any error in server.

We discussed with Authorize.net team and did real time order process and after that Authorize.net team confirmed that there isn't any issue in their processes.

The only message (Provided by development team) we can see is in below image.

Development team tried to check the same from their end but they were not able to find the issue.

According to development team's statement "It is issue with Magento only"

[alex_max]

Waiting for solution,

Can anybody help me in this?

[aditya_kalambha]

Please check

var/log/system.log

var/log/exception.log

once clean cache and cache flush and check.