I had created a new admin user some time ago which was working fine until this morning, when I tried to login and the login first timed out, and then gave me an unhandled exception and indicated I should report it. I then got this message:
Cause: TypeError: Cannot read property 'summary' of undefined
Version: 1.8.0
Build: 4516221
ESXi: 6.5.0
Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
Exception stack:
TypeError: Cannot read property 'summary' of undefined
at https://10.0.0.1/ui/scripts/main.js:322:15674
at https://10.0.0.1/ui/scripts/main.js:265:9465
at k.$eval (https://10.0.0.1/ui/scripts/main.js:265:16492)
at k.$digest (https://10.0.0.1/ui/scripts/main.js:265:15047)
at https://10.0.0.1/ui/scripts/main.js:265:16577
at e (https://10.0.0.1/ui/scripts/main.js:264:5646)
at https://10.0.0.1/ui/scripts/main.js:264:7652
After receiving the above message, I was unable to login with that user - either the login timed out, or it briefly flashed what looked like the summary page with a blank overlay window with a red X and the title Unhandled Exception, before returning me to the login screen. Repeated attempts to login didn't work, nor did reloading the page or clearing the browser cache. I also tried rebooting the host but still encountered the same login problem.
I then tried logging in as root, which (thankfully) worked. Logged out and tried again under the other user account, but still experienced the same issue. I ended up deleting and recreating the problematic user, which then resolved the issue.
Just posting here in case this might be of interest to others, or if someone might know how to ensure this doesn't recur - I'd be a bit worried if it happened on multiple accounts resulting in an inability to access the host.
