paperclipai/paperclip · error

Managed sandbox environment changed during reactivation

Error message

Managed sandbox environment changed during reactivation

What it means

Concurrency guard in ensureManagedSandboxEnvironment's reactivation path: the row this transaction was about to reactivate changed underneath it (archive token no longer matches), indicating a concurrent reconciler touched it. Aborts rather than overwriting the other writer's state.

Source

Thrown at server/src/services/environments.ts:575

            typeof rowArchiveToken === "string" &&
            matchingBindings.some((binding) => {
              const bindingDefaults = binding.defaultsJson;
              return bindingDefaults.status === "archived" &&
                bindingDefaults[MANAGED_ENVIRONMENT_ARCHIVE_TOKEN_DEFAULTS_KEY] === rowArchiveToken;
            });
          if (archivedByReconciler) {
            const reactivated = await tx
              .update(environments)
              .set({
                status: "active",
                metadata: withoutManagedEnvironmentArchiveToken(row.metadata),
                updatedAt: new Date(),
              })
              .where(and(eq(environments.id, row.id), eq(environments.status, "archived")))
              .returning()
              .then((rows) => rows[0] ?? null);
            if (!reactivated) {
              throw new Error("Managed sandbox environment changed during reactivation");
            }
            row = reactivated;
            providerReactivated = true;

            for (const binding of matchingBindings) {
              const reactivatedDefaults = {
                ...managedEnvironmentBaselineDefaults(binding.defaultsJson),
                status: "active",
              };
              const reactivatedHash = stockHash(reactivatedDefaults);
              await tx
                .update(builtInManagedResources)
                .set({
                  stockHash: reactivatedHash,
                  defaultsJson: reactivatedDefaults,
                  updatedAt: new Date(),
                })
                .where(and(

View on GitHub (pinned to 01ad858492)

Solutions

1. Retry the reactivation; the environment changed concurrently. Investigate concurrent modifications if it persists.

When it happens

Trigger: Thrown at server/src/services/environments.ts:575 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of paperclipai/paperclip@01ad858492 (2026-08-18). Data as JSON: /api/errors/b741447426ac7605. Report an issue: GitHub.