What does it mean when the schema-validation reports a table is missing?

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When the schema-validation reports a table is missing, it means that the database schema definition does not include a required table. This can happen if the table was accidentally deleted or if it was not included in the initial schema definition. It can also occur if there was a mistake in the schema definition code. This error needs to be corrected by adding the missing table to the schema definition to ensure that the database can operate correctly.