login problem; Error at ClientRequestManager.updateAuthCookie

[mxmilkiib]

Asking here as I'd rather not communicate through Discord;

I've done a fresh install on Armbian using the node repo and npm, with a 'download' user that is in the ssl-cert group, with a 'download' group writable run dir and a .service including SSL arguments (same LetsEncrypt certs that work on my qBitTorrent web on a different port), and I'm trying to connect to my qBitTorrent web install but I'm getting this in my log;

env[3010]: Error                                                                                                                                                                                       
env[3010]:     at ClientRequestManager.updateAuthCookie (/usr/lib/node_modules/flood/dist/index.js:438:185924)                                                                                         
env[3010]:     at runMicrotasks (<anonymous>)                                                                                                                                                          
env[3010]:     at processTicksAndRejections (node:internal/process/task_queues:96:5)

context;

Dec 13 01:50:56 [host] python3[3031]: >>> Heartbeat Q:0 2021-12-13 01:50:56
Dec 13 01:51:04 [host] env[16427]: GET / 200 7.211 ms - 992
Dec 13 01:51:04 [host] env[16427]: GET /static/css/main.91a3ca36ed1a96839319.css 304 12.384 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/main.e491eea1.js 304 10.603 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /api/auth/verify?1639360264368 200 8.626 ms - 105
Dec 13 01:51:04 [host] env[16427]: GET /api/client/settings 500 13.658 ms - 102
Dec 13 01:51:04 [host] env[16427]: GET /api/settings 200 186.426 ms - 67
Dec 13 01:51:04 [host] env[16427]: GET /static/css/116.bc338a685eec2e79b3a6.css 304 15.760 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/116.0faf47ae.chunk.js 304 15.446 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/90.8be17c89.chunk.js 304 12.209 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/183.afcec458.chunk.js 304 17.718 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/535.4bb41992.chunk.js 304 16.587 ms - -
Dec 13 01:51:04 [host] env[16427]: GET /static/js/flag0.d867ac2a.chunk.js 304 15.147 ms - -
Dec 13 01:51:04 [host] env[16427]: Error
Dec 13 01:51:04 [host] env[16427]:     at ClientRequestManager.updateAuthCookie (/usr/lib/node_modules/flood/dist/index.js:438:185924)                                                                                       
Dec 13 01:51:04 [host] env[16427]:     at processTicksAndRejections (node:internal/process/task_queues:96:5)                                                                                                                 
Dec 13 01:51:06 [host] python3[3031]: >>> Heartbeat Q:0 2021-12-13 01:51:06
Dec 13 01:51:12 [host] env[16427]: GET /api/client/connection-test 500 16.007 ms - 21
Dec 13 01:51:12 [host] env[16427]: GET /api/activity-stream?historySnapshot=FIVE_MINUTE 200 21.370 ms - -                                                                                                                    
Dec 13 01:51:16 [host] python3[3031]: >>> Heartbeat Q:0 2021-12-13 01:51:16
Dec 13 01:51:26 [host] python3[3031]: >>> Heartbeat Q:0 2021-12-13 01:51:26
Dec 13 01:51:28 [host] env[16427]: GET /api/auth/verify?1639360288107 200 4.333 ms - 105
Dec 13 01:51:28 [host] env[16427]: GET /api/client/settings 500 10.417 ms - 102
Dec 13 01:51:28 [host] env[16427]: GET /api/settings 200 15.767 ms - 67
Dec 13 01:51:28 [host] env[16427]: GET /static/css/116.bc338a685eec2e79b3a6.css 304 1.602 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/js/116.0faf47ae.chunk.js 304 5.177 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/js/90.8be17c89.chunk.js 304 4.196 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/js/183.afcec458.chunk.js 304 8.673 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/js/535.4bb41992.chunk.js 304 9.938 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/js/flag0.d867ac2a.chunk.js 304 8.456 ms - -
Dec 13 01:51:28 [host] env[16427]: Error
Dec 13 01:51:28 [host] env[16427]:     at ClientRequestManager.updateAuthCookie (/usr/lib/node_modules/flood/dist/index.js:438:185924)                                                                                       
Dec 13 01:51:28 [host] env[16427]:     at processTicksAndRejections (node:internal/process/task_queues:96:5)                                                                                                                 
Dec 13 01:51:28 [host] env[16427]: GET /static/media/Roboto-500.c7e17507..woff2 304 5.341 ms - -
Dec 13 01:51:28 [host] env[16427]: GET /static/media/Roboto-700.2b8c7cb1..woff2 304 4.308 ms - -
Dec 13 01:51:29 [host] env[16427]: GET /api/activity-stream?historySnapshot=FIVE_MINUTE 200 5.348 ms - -                                                                                                                     
Dec 13 01:51:36 [host] python3[3031]: >>> Heartbeat Q:0 2021-12-13 01:51:36

I've also tried noauth and setting qt user, pass and address flags, and rebooted to be sure.

Might I have missed something here? Thanks for any advice.