Seeing the same error.
Voyager 2.46.0
The original, updated for ARM7 RISC OS
https://forums.jaspp.org.uk/forum/viewtopic.php?t=411#p4092
Testing Testing 256 to the power of testing
(Voyager client seemed to be in a weird half- logged in state but I logged in again and it seems sane now)
Seeing the same error.
Voyager 2.46.0