What does it mean when tsm import encounters an 'Internal error processing applyMigrations' error?

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When TSM import encounters an "Internal error processing applyMigrations" error, it means that there was a problem during the application of migrations in the process of importing data. This error can occur due to various reasons such as invalid delta versions, incorrect database schemas, or corrupted migration files. To resolve this error, users may need to troubleshoot the error, fix any underlying issues, and retry the TSM import process.