Stripe session/checkout error trying to purchase VPN with experimental SKU SDK

[stephendonner]

Test plan

See #15804

Description

Stripe session/checkout error trying to purchase VPN with experimental SKU SDK; found while testing -- and blocks -- #20557

Steps to Reproduce

1. install 1.36.105
2. launch Brave using --vmodule="*/skus/*"=1 --enable-logging=stderr
3. via brave://flags, set Enable experimental SKU SDK to Enabled
4. also set Experimental SKU Environment to Development
5. click to Relaunch
6. load account.brave.software
7. enter basic auth creds for site
8. enter an email and click Get login link (I used premium-test-04@mailinator.com)
9. check your email inbox (above case: https://www.mailinator.com/v4/public/inboxes.jsp?to=premium-test-04)
10. click Log in to Brave or the link in the email
11. click on Browse plans
12. scroll down and click on Buy now for Brave VPN Subscription
13. enter payment details on https://checkout.stripe.com/pay/cs_test…
14. click Subscribe
15. you should get a Complete your purchase... screen
16. click on Complete payment

Actual result:

You'll end up on a screen like this

URL: https://account.brave.software/account/?intent=provision&order_id=c9e0c6e9-3903-4828-af70-cfd8bf4a578e

Clicking Complete payment yields this:

Expected result:

This is as far as you can currently get; means you have a valid subscription.

Reproduces how often:

100%

Brave version (brave://version info)

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

cc @evq @bsclifton @mattmcalister @srirambv @rebron

[bsclifton]

Closing as I believe this is resolved now

[bsclifton]

Re-opening because I forgot there was a cache fix in brave/brave-core#12175

[stephendonner]

Verified PASSED using

Brave	1.39.84 Chromium: 101.0.4951.41 (Official Build) beta (x86_64)
Revision	93c720db8323b3ec10d056025ab95c23a31997c9-refs/branch-heads/4951@{#904}
OS	macOS Version 11.6.5 (Build 20G527)

Confirmed I was able to purchase a VPN subscription from account.brave.software using the inline test plan, above.

brave://flags	step 11	step 12	step 12.5	step 13	step 14

---

Verification PASSED on

Brave | 1.40.68 Chromium: 102.0.5005.50 (Official Build) beta (64-bit)
-- | --
Revision | f6e2cf8f59ec714bdcff8499991d55898875f287-refs/branch-heads/5005@{#648}
OS | Windows 10 Version 21H2 (Build 19044.1706)

brave://flags	step 11	step 12	step 12.5	step 13	step 14