@ExceptionHandler(Exception.class)
	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
	@ApiResponse(
			responseCode = "500",
			description = "Internal server error",
			content = @Content(
					mediaType = MediaType.APPLICATION_JSON_VALUE,
					schema = @Schema(implementation = ErrorDTO.class)
			)
	)
	ErrorDTO handleUnhandledError() {
		return new ErrorDTO("internal error: ");
	}
Handle unhandled error error dto.

@return the error dto
springdoc-openapi-tests/springdoc-openapi-javadoc-tests/src/test/java/test/org/springdoc/api/v30/app56/GlobalExceptionHandler.java