SUMMARY
iNaturalist Export "Unknown Error" when click in Identification field

STEPS TO REPRODUCE
1. ensure you've registered your iNaturalist account info into digiKam first 
2. select one or a few jpg files (with valid date and GPS info and under 2000px per side dimension)
3. open "Export to iNaturalist" dialog
4. click in "Enter Identification" field 
5. click "OK" to the "Unknown Error" message
6. at the cursor in the "enter ID" field, type in a taxon and select one of the iNat suggestions returned
7. click the "start uploading" button, wait
8. click "OK" to the (2nd) "Unknown Error" message

OBSERVED RESULT
at 4. an "Error - digiKam" pops up with "Unknown Error" message.
at 7. another "Error - digiKam" pops up with "Unknown Error" message. (If the "resize image" check box is checked, there is a short delay before the error pops up.)
The green progress bar shows 50% (if selected one photo, or 25% if selected 3 photos) but that progress never changes.
If you now go to your iNat account directly, a new observation has been created but no image attached. Each time you repeat these steps, a new observation record created with the chosen taxa ID shown but without image(s).
Also, whether or not the "write Photo-ID" to Source Image" is checked, I see no added ID info in the source image metadata.

EXPECTED RESULT
no error msgs, create iNat Observation record with attached image(s), see chosen taxa ID added to caption or description or keyword fields in source jpg file. 


SOFTWARE/OS VERSIONS
Windows: 10 Pro 21H1
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION