VTTF-0017: InvalidMigrationRunner

NOTE

createMigrationRunner() was called with neither packageId nor systemId. The id is the game.settings namespace the world stores its schemaVersion under, so without it every world would keep its version under the string "undefined". This is a mistake in the call, not a migration that failed.

Field	Value
Code	VTTF-0017
Name	InvalidMigrationRunner
Package	@vttforge/core
Source	packages/core/src/errors/registry.ts

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This page comes from the registry entry. We are still writing the root causes, common triggers and code samples for each code; the message above is what the runtime throws.

packages/core/scripts/codegen-errors.mjs builds this file from the registry at packages/core/src/errors/registry.ts. Do not edit by hand; re-run pnpm --filter @vttforge/core build after editing the registry.