Empty Confirmation Page

[cyberhiker]

I have all the resource URLs configured to what I think they should be, and the payment actually goes through and charges the credit card in Stripe, but the debugger reports the following:

Error loading this URI: Could not load the source for https://<redacted>/contribute/?page=CiviCRM&q=civicrm/contribute/transact.
[Exception... "Component returned failure code: 0x80470002 (NS_BASE_STREAM_CLOSED) [nsIInputStream.available]"  nsresult: "0x80470002 (NS_BASE_STREAM_CLOSED)"  location: "JS frame :: resource://devtools/shared/base-loader.js -> resource://devtools/shared/DevToolsUtils.js :: onResponse :: line 562"  data: no]
Stack: onResponse@resource://devtools/shared/base-loader.js -> resource://devtools/shared/DevToolsUtils.js:562:23
onStopRequest@resource://gre/modules/NetUtil.jsm:126:17
Line: 562, column: 0

This is within latest Wordpress, using CiviCRM 4.7.31, latest of the 4.7-dev branch.

Let me know what it could be,