"Backend Error: Error signing in"

Issue Description:
Error message displays after login attempt ingame and prevents me from going any further.

Error Displayed (If Applicable):
“Backend Error: Error signing in”

Steps to Reproduce:
Press SPACE. Login. Fail.

Mission Name (If Applicable):

Platform:
[Steam/Microsoft Store/Xbox]
Steam

Player ID:

Approx. Time of Issue & Timezone:
9:15PM EST

Reproduction Rate:
Once - Rare (<10%) - Unusual (<25%) - Common (<50%) - Often (<75%) - Constant (100%)
Constant

Upload Supporting Evidence:
[Screenshots, recordings, links to Twitch VODs, etc.]

[PC] Paste Crash Report, or Upload Console Log & darktide_launcher.log:
[Instructions: How To Provide a Crash Report, Console Log, or darktide_launcher.log]

Could you share the URL to your Steam profile with me please?