问org.postgresql.util.PSQLException:错误:运算符不存在: character varying = bytea

EN

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet] with root cause

org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = bytea
Hint: No operator matches the given name and argument types. You might need to add explicit type casts. 

@PostMapping
public ResponseEntity<DocumentCreateResponse> addDocument(@RequestParam("file") MultipartFile file) throws IOException {
    Path copyLocation = Paths.get(uploadDir, Objects.requireNonNull(file.getOriginalFilename()));
    Files.copy(file.getInputStream(), copyLocation, StandardCopyOption.REPLACE_EXISTING);

    Document savedDocument = documentService.save(copyLocation.toAbsolutePath().toFile());
    if (savedDocument == null){
        return new ResponseEntity<>(new DocumentCreateResponse(null), null, HttpStatus.NOT_ACCEPTABLE);
    }
    return new ResponseEntity<>(new DocumentCreateResponse(savedDocument.getId()), null, HttpStatus.ACCEPTED);
}

@Entity
public class DocumentEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name ="document_id")
    private Long id;

    @Column(name ="document_file")
    private File file;


    public DocumentEntity() {
    }

    public DocumentEntity(File file) {
        this.file = file;
    }
}

create table if not exists document_entity
(
    document_id bigserial
    constraint document_entity_document_id
    not null primary key,
    document_file varchar not null
);

public class DocumentService implements DocumentServicePort {
    private final DocumentRepository documentRepository;

    public DocumentService(DocumentRepository documentRepository) {
        this.documentRepository = documentRepository;
    }

    @Override
    public Document save(File file) {
        Document document = new Document(file);
        if (document.hasValidExtension(document)) {
            documentRepository.saveDocument(document);
            return document;
        }
        return null;
    }
}