Problema ao fazer o relacionamento entre tabelas no JPA

Caused by: org.hibernate.exception.SQLGrammarException: Error accessing column metadata: tb_documento_modelo_documento
	at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:106)
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.convertSQLException(InformationExtractorJdbcDatabaseMetaDataImpl.java:98)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getForeignKeys(InformationExtractorJdbcDatabaseMetaDataImpl.java:849)
	at org.hibernate.tool.schema.extract.internal.TableInformationImpl.foreignKeys(TableInformationImpl.java:97)
	at org.hibernate.tool.schema.extract.internal.TableInformationImpl.getForeignKeys(TableInformationImpl.java:91)
	at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.checkForExistingForeignKey(AbstractSchemaMigrator.java:471)
	at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applyForeignKeys(AbstractSchemaMigrator.java:423)
	at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:249)
	at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:114)
	at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:183)
	at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:72)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:309)
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:462)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:938)
	... 42 more
Caused by: org.postgresql.util.PSQLException: ERROR: column t1.tgconstrname does not exist
  Posição: 113
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2103)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1836)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:512)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:374)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:254)
	at org.postgresql.jdbc2.AbstractJdbc2DatabaseMetaData.getImportedExportedKeys(AbstractJdbc2DatabaseMetaData.java:3477)
	at org.postgresql.jdbc2.AbstractJdbc2DatabaseMetaData.getImportedKeys(AbstractJdbc2DatabaseMetaData.java:3670)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getForeignKeys(InformationExtractorJdbcDatabaseMetaDataImpl.java:798)
	... 53 more
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at dao.ModeloDocumentoDAO.closeEntityManager(ModeloDocumentoDAO.java:40)

@Entity
@Table(name = "TB_DOCUMENTO_MODELO_DOCUMENTO")
public class DocumentoModeloDocumento {

	@Id
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="documento_modelo_documento_sequence")
	@SequenceGenerator(name="documento_modelo_documento_sequence", sequenceName="documento_modelo_documento_seq", allocationSize = 1)
	@Column(name = "ID_DOCUMENTO_MODELO_DOCUMENTO")
	private Long id;
	
	@ManyToOne(fetch = FetchType.LAZY, optional = false)
	@JoinColumn(name = "ID_DOCUMENTO_FK")
	private Documento documento;
	
	@ManyToOne(fetch = FetchType.LAZY, optional = false)
	@JoinColumn(name = "ID_MODELO_DOCUMENTO_FK")
	private ModeloDocumento modeloDocumento;
}