issue # Generator non-saved

src/common/generator/Generator.ts

@@ -7,7 +7,7 @@ export class Generator {
    * @param {number} length - 생성할 코드 길이 
    * @returns {string} 생성한 코드
    */
-  public generateRandomNumberCode(length: number): string {
+  generateRandomNumberCode(length: number): string {
     if (length < 1) throw new Error(ErrorCode.MIN_LENGTH_ERR);
     const randomNumber = Math.random();
     const randomCode = randomNumber.toString();
@@ -27,7 +27,7 @@ export class Generator {
    * @param {number} length - 생성할 코드 길이
    * @returns {string} 생성한 코드
    */
-  public generateRandomCode(length: number): string {
+  generateRandomCode(length: number): string {
     if (length < 3) throw new Error(ErrorCode.MIN_LENGTH_ERR);
     let result = '';
     const getRandomChar = (string: string): string => {