What is the meaning of "ERROR: current transaction is aborted, commands ignored until end of transaction block"?

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This error message is generated by a database management system, such as PostgreSQL, when a transaction has been aborted due to an error or manual intervention. The message indicates that any further database commands that are issued within the current transaction will be ignored until the transaction is ended (either by being committed or rolled back). The purpose of this message is to prevent data corruption by ensuring that any changes made within a transaction are completed or undone before new commands are executed.