Merge branch 'cherry2' into 'master'

에러 수정

See merge request research/bora_it!2

client/package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@popperjs/core": "^2.9.2",
     "@testing-library/jest-dom": "^5.11.4",
     "@testing-library/react": "^11.1.0",
     "@testing-library/user-event": "^12.1.10",