Downgrading to react 18.

package.json

@@ -65,14 +65,14 @@
     "pretty-ms": "^9.2.0",
     "prismjs": "^1.29.0",
     "prop-types": "^15.8.1",
-    "react": "^19.0.0",
+    "react": "18",
     "react-ace": "^14.0.1",
     "react-bootstrap": "2.10.9",
     "react-collapse": "^5.1.1",
     "react-copy-to-clipboard": "^5.1.0",
     "react-datetime": "^3.3.1",
     "react-diff-viewer": "^3.1.1",
-    "react-dom": "^19.0.0",
+    "react-dom": "18",
     "react-dropzone": "^14.3.5",
     "react-height": "^3.0.2",
     "react-helmet": "^6.1.0",

yarn.lock

@@ -10702,7 +10702,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"loose-envify@npm:^1.0.0, loose-envify@npm:^1.2.0, loose-envify@npm:^1.4.0":
+"loose-envify@npm:^1.0.0, loose-envify@npm:^1.1.0, loose-envify@npm:^1.2.0, loose-envify@npm:^1.4.0":
   version: 1.4.0
   resolution: "loose-envify@npm:1.4.0"
   dependencies:
@@ -12736,14 +12736,15 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-dom@npm:^19.0.0":
-  version: 19.0.0
-  resolution: "react-dom@npm:19.0.0"
+"react-dom@npm:18":
+  version: 18.3.1
+  resolution: "react-dom@npm:18.3.1"
   dependencies:
-    scheduler: ^0.25.0
+    loose-envify: ^1.1.0
+    scheduler: ^0.23.2
   peerDependencies:
-    react: ^19.0.0
-  checksum: 009cc6e575263a0d1906f9dd4aa6532d2d3d0d71e4c2b7777c8fe4de585fa06b5b77cdc2e0fbaa2f3a4a5e5d3305c189ba152153f358ee7da4d9d9ba5d3a8975
+    react: ^18.3.1
+  checksum: 298954ecd8f78288dcaece05e88b570014d8f6dce5db6f66e6ee91448debeb59dcd31561dddb354eee47e6c1bb234669459060deb238ed0213497146e555a0b9
   languageName: node
   linkType: hard
 
@@ -12978,10 +12979,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react@npm:^19.0.0":
-  version: 19.0.0
-  resolution: "react@npm:19.0.0"
-  checksum: 86de15d85b2465feb40297a90319c325cb07cf27191a361d47bcfe8c6126c973d660125aa67b8f4cbbe39f15a2f32efd0c814e98196d8e5b68c567ba40a399c6
+"react@npm:18":
+  version: 18.3.1
+  resolution: "react@npm:18.3.1"
+  dependencies:
+    loose-envify: ^1.1.0
+  checksum: a27bcfa8ff7c15a1e50244ad0d0c1cb2ad4375eeffefd266a64889beea6f6b64c4966c9b37d14ee32d6c9fcd5aa6ba183b6988167ab4d127d13e7cb5b386a376
   languageName: node
   linkType: hard
 
@@ -13128,14 +13131,14 @@ __metadata:
     pretty-ms: ^9.2.0
     prismjs: ^1.29.0
     prop-types: ^15.8.1
-    react: ^19.0.0
+    react: 18
     react-ace: ^14.0.1
     react-bootstrap: 2.10.9
     react-collapse: ^5.1.1
     react-copy-to-clipboard: ^5.1.0
     react-datetime: ^3.3.1
     react-diff-viewer: ^3.1.1
-    react-dom: ^19.0.0
+    react-dom: 18
     react-dropzone: ^14.3.5
     react-height: ^3.0.2
     react-helmet: ^6.1.0
@@ -13843,10 +13846,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"scheduler@npm:^0.25.0":
-  version: 0.25.0
-  resolution: "scheduler@npm:0.25.0"
-  checksum: b7bb9fddbf743e521e9aaa5198a03ae823f5e104ebee0cb9ec625392bb7da0baa1c28ab29cee4b1e407a94e76acc6eee91eeb749614f91f853efda2613531566
+"scheduler@npm:^0.23.2":
+  version: 0.23.2
+  resolution: "scheduler@npm:0.23.2"
+  dependencies:
+    loose-envify: ^1.1.0
+  checksum: 3e82d1f419e240ef6219d794ff29c7ee415fbdc19e038f680a10c067108e06284f1847450a210b29bbaf97b9d8a97ced5f624c31c681248ac84c80d56ad5a2c4
   languageName: node
   linkType: hard