try to fix the onpack expiry date setting

src/main/java/com/ffii/core/support/JdbcDao.java

@@ -46,7 +46,8 @@ public class JdbcDao {
 	 */
 	public String queryForString(String sql, Map<String, ?> paramMap) {
 		try {
-			return this.template.queryForObject(sql, paramMap, String.class);
+			String value = this.template.queryForObject(sql, paramMap, String.class);
+			return value != null ? value : StringUtils.EMPTY;
 		} catch (EmptyResultDataAccessException e) {
 			return StringUtils.EMPTY;
 		}
@@ -60,7 +61,8 @@ public class JdbcDao {
 	 */
 	public String queryForString(String sql, Object paramObj) {
 		try {
-			return this.template.queryForObject(sql, new BeanPropertySqlParameterSource(paramObj), String.class);
+			String value = this.template.queryForObject(sql, new BeanPropertySqlParameterSource(paramObj), String.class);
+			return value != null ? value : StringUtils.EMPTY;
 		} catch (EmptyResultDataAccessException e) {
 			return StringUtils.EMPTY;
 		}

src/main/java/com/ffii/fpsms/modules/jobOrder/service/OnPackTemplateFileService.kt

@@ -347,7 +347,7 @@ open class OnPackTemplateFileService(
                 LIMIT 1
                 """.trimIndent(),
                 mapOf("machine" to machine, "code" to itemCode),
-            ).trim().takeIf { it.isNotEmpty() }
+            ).orEmpty().trim().takeIf { it.isNotEmpty() }
         } catch (_: DataAccessException) {
             null
         }