Qt mainenance tool crashes with unhandled exception

Unhandled exception at 0x0089A4E8 in MaintenanceTool.exe: 0xC0000005: Access violation reading location 0x00000000

Steps to reproduce:

1. Start Qt Maintenance Tool
2. Fill in account details
3. Click next
4. The progressbar starts moving and the text below the bar shows "Checking for licenses..."
5. Crash

Output from d:\Qt\5>MaintenanceTool.exe --verbose
IFW Version: 4.0.1, built with Qt 5.12.7.
Build date: Dec 2 2020
Installer Framework SHA1: e425a8d8ce327ca9f1bcb95a14f8c41dc13b6f20
[0] Arguments: MaintenanceTool.exe, --verbose
[5102] Critical: Operations missing for installed packages ("qt.tools.vcredist")
[5103] Critical: Orphaned operations ()
[5103] Critical: Your installation seems to be corrupted. Please consider re-installing from scratch, remove the packages from components.xml which operations are missing, or reinstall the packages.
[5104] Reading Qt Account settings from disk: "C:/Users/######/AppData/Roaming/Qt/qtaccount.ini"
[5105] Opensource installation detected: "D:/Qt/5"
[5105] QtAccount information:
[5105] Login completed: false
[5106] Email: "#######"
[5106] Total number of licenses: 0
[5106] Account type: 1
[5137] Language: de-DE
[30757] Login completed to Qt Account: "######"

Crash