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Incident Report 18/11/2025

Start: Fenrir/3.8.17 (Nov 17, 2025, 21:30 AM UTC+2:00)

End: Gremlins/3.9.6 (Nov 18, 2025, 11:25 AM UTC+2:00)

Reach: One flow was unusable across all Mindflow tenants.

Impact: High – blocking

Description

Section titled “Description”

After the Gremlins release, a previously working flow could no longer be opened in the designer.

The error message:

Something went wrong → Failed ot load flow snapshot

Causes

Section titled “Causes”

Two issues caused the problem:

  1. A bug fix for webhook responses was not backported correctly to the Fenrir release.

  2. An issue occurred during our delivery process.

    Our delivery process follows a “blue/green deployment” methodology.

    When release N runs on the blue account, we install version N+1 on the green account. Once installation completes, all data from the blue account is copied to the green account, and users are redirected to green. Meanwhile, a migration subsystem monitors changes on the blue account during the data copy.

    The affected flow was being modified during delivery, and the migration subsystem failed. Some modifications from the blue account were not sent to the green account, resulting in an unstable flow.

Resolution

Section titled “Resolution”
  1. To unblock the user as quickly as possible, the flow was resynchronized between the blue and green accounts.
  2. The bug in the migration subsystem has been identified and fixed. The fix will be deployed in the next release.
  3. Additional tests will be conducted to ensure the migration subsystem handles all edge cases properly.

Follow-up

Section titled “Follow-up”

The issue will not occur with the upcoming releases.

We sincerely apologize for this disruption. We understand the inconvenience this has caused and are committed to preventing similar issues in the future.