OK, I found this in the windows event viewer:
Log Name: Application
Source: ASP.NET 4.0.30319.0
Date: 21/01/2018 00:46:08
Event ID: 1314
Task Category: Web Event
Level: Information
Keywords: Classic
User: N/A
Computer: IIS-VM2K12
Description:
Event code: 4011
Event message: An unhandled access exception has occurred.
Event time: 21/01/2018 00:46:08
Event time (UTC): 21/01/2018 00:46:08
Event ID: 3c53bd9bc9ac4d59b43bca74f7301ac2
Event sequence: 2114
Event occurrence: 1
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/4/ROOT-1-131609331341013084
Trust level: Full
Application Virtual Path: /
Application Path: C:\inetpub\wwwroot\DNN\REMOVED\
Machine name: IIS-VM2K12
Process information:
Process ID: 5020
Process name: w3wp.exe
Account name: IIS APPPOOL\DNN_REMOVED
Request information:
Request URL: http://REMOVED/API/PersonaBar/Extensions/ParsePackage
Request path: /API/PersonaBar/Extensions/ParsePackage
User host address: 192.168.1.4
User: host
Is authenticated: True
Authentication Type: Forms
Thread account name: IIS APPPOOL\DNN_REMOVED
Custom event details:
Event Xml:
http://schemas.microsoft.com/win/2004...>
1314
4
3
0x80000000000000
42693
Application
IIS-VM2K12
4011
An unhandled access exception has occurred.
21/01/2018 00:46:08
21/01/2018 00:46:08
3c53bd9bc9ac4d59b43bca74f7301ac2
2114
1
0
/LM/W3SVC/4/ROOT-1-131609331341013084
Full
/
REMOVED
IIS-VM2K12
5020
w3wp.exe
IIS APPPOOL\DNN_REMOVED
http://REMOVED/API/PersonaBar/Extensions/ParsePackage
/API/PersonaBar/Extensions/ParsePackage
192.168.1.4
host
True
Forms
IIS APPPOOL\DNN_REMOVED