Fixed file search issue

frontend/package.json

@@ -8,6 +8,7 @@
     "@emotion/is-prop-valid": "^1.1.1",
     "@emotion/react": "^11.7.0",
     "@emotion/styled": "^11.6.0",
+    "@lezer/highlight": "^1.1.3",
     "@material-ui/core": "^4.5.2",
     "@material-ui/icons": "^4.5.1",
     "@material-ui/lab": "^4.0.0-alpha.58",
@@ -17,6 +18,7 @@
     "@mui/icons-material": "^5.2.1",
     "@mui/material": "^5.2.3",
     "@mui/x-data-grid": "^5.17.11",
+    "@uiw/codemirror-themes": "^4.19.9",
     "@uiw/react-codemirror": "^3.2.1",
     "@use-it/interval": "^1.0.0",
     "algoliasearch": "^4.13.1",
@@ -83,7 +85,7 @@
     "zone.js": "~0.11.4"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "PORT=3000 react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject",