[Koha] Record import fails in 22.11

[Elaine Bradtke]

When importing MARC records, after  selecting the file and uploading and
setting the parameters for import, once I hit the Stage for import button,
Koha jumps back to the page that says choose file.
I've tried this with a large batch of authority records and a small (7
records) batch of biblio records (both files were downloaded from Koha,
edited in MarcEdit) and it failed both times. The biblio file at least
works in our production site which is on 22.05.
Elaine Bradtke
VWML <https://www.vwml.org>
English Folk Dance and Song Society <https://www.efdss.org>
Cecil Sharp House, 2 Regent's Park Road, London NW1 7AY
Tel    +44 (0) 20 7485 2206 (This number is for the English Folk Dance and
Song Society in London, England. If you wish to phone me personally, send
an e-mail first. I work off site)
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Registered Company No. 297142
Charity Registered in England and Wales No. 305999