strange error from auth.js

[ar4hc]

Using auth.js in a svelte app with those versions:

"@auth/core": "^0.34.2"
"@auth/sveltekit": "^1.6.0",

for a an AzureAdProvider give this error on startup:

TypeError: basePath?.replace is not a function
    at createActionURL (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:7565:45)
    at auth (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59266:22)
    at event.locals.auth (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59314:35)
    at appHandle (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59605:40)
    at apply_handle (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59466:14)
    at resolve (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59480:35)
    at handle (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59323:14)
    at apply_handle (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59466:14)
    at Object.handle (file:///app/build/server/chunks/hooks.server-DPNyeeNm.js:59463:12)
    at respond (file:///app/build/server/chunks/index-COs9zbOI.js:3915:43)

Looking at the code the createActionURL function expects a "basePath" as last argument, but gets a "config" object frimthe auth() function.

Why...?