saw your filed issue at [com.triodos.bankinguk] Activating Mobile Secure Key fails · Issue #1881 · microg/GmsCore · GitHub and looked through the 2 log files.
It’s due to not implemented parts of the GMS Vision API (it only does barcodes, not QR or Face) - see github
3229 3255 D ChimeraServiceProvider: query: content://com.google.android.gms.chimera/api_force_staging/com.google.android.gms.vision.ocr?requestStartTime=414613693
28090 31031 I iodos.bankingu: The ClassLoaderContext is a special shared library.
28090 31031 W GmsDynamiteLoaderImpl: No such module known: com.google.android.gms.vision.ocr
28090 31031 D GmsDynamiteLoaderImpl: unimplemented Method: getModuleVersion for com.google.android.gms.vision.ocr
28090 31034 W GmsDynamiteLoaderImpl: No such module known: com.google.android.gms.vision.face
28090 31034 D GmsDynamiteLoaderImpl: unimplemented Method: getModuleVersion for com.google.android.gms.vision.face
(btw: theres a segfault on the browser in there right at the start, that’s funny. Probably a reason to update /e/ itself)