Handler function NM_observeActivity threw an exception: TypeError: aChannel.loadInfo is null
Stack: NetworkMonitor.prototype._createNetworkEvent@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/toolkit/webconsole/network-monitor.js:843:1
NM__onRequestHeader@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/toolkit/webconsole/network-monitor.js:906:1
NM_observeActivity@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/toolkit/webconsole/network-monitor.js:682:7
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14
Line: 843, column: 1