rw-r-r- 1 andrew staff 349 Feb 17 01:04 Accessibility.hīut on this Mac, that directory is empty: $ ls -l rw-r-r- 1 andrew staff 2109 Feb 23 06:57 AXHearingUtilities.h rw-r-r- 1 andrew staff 395 Feb 17 01:04 AXFoundation.h In the evening, stop by the EMT center and attend the class for some credit. Week 8 - Fixie classes at the EMT center. Stop by the cafe in the evening and intervene, you'll have to bribe the bullies and you'll get some credit. rw-r-r- 1 andrew staff 2612 Feb 23 06:57 AXCustomContent.h Week 7 - Fixie being bullied outside Mindlesso. rw-r-r- 1 andrew staff 402 Feb 23 06:57 AXColorUtilities.h rw-r-r- 1 andrew staff 2013 Feb 23 06:57 AXBrailleMap.h On a shared computer, such as a public terminal, the Umbrella roaming client can't differentiate between different users and cannot easily allow the right domains for the right people. rw-r-r- 7 andrew staff 12307 Feb 23 06:14 AXAudiograph.h Umbrella is unable to provide a time-based policy application with our service, so simply allowing a user to access at site all the time could be problematic. UPDATE.A lot of people are asking for a No Umbrellas Allowed Wiki, I. Looking in the Headers directory of that amework bundle. The only signature it will accept is generic but then buyers will say you are unskilled at appraising signatures. It turns out that the header file was literally missing from within the SDK (inside the Xcode app bundle). Here's the error that lead me to this: /Applications/Xcode.app/Contents/Developer/Platforms/atform/Developer/SDKs/iPhoneSimulator15.4.sdk/System/Library/Frameworks/amework/Modules/module.modulemap:2:19: umbrella header 'Accessibility.h' not found In my case, the problem appears to have been with an incomplete installation of Xcode 13.3 (13E113).