Please remove these extra spaces. I'm not sure we need to update pom files manually. @soffest could you please take a look?
Update node version of react app to the latest LTS version (v14)
- Add engine filed to package.json https://docs.npmjs.com/cli/v6/configuring-npm/package-json#engines
- update .nvmrc
- update pom.xml 

kafka-ui-react-app/.nvmrc kafka-ui-react-app/package.json pom.xml
kafka-ui-react-app/.nvmrc kafka-ui-react-app/package.json pom.xml
diff --git a/kafka-ui-react-app/.nvmrc b/kafka-ui-react-app/.nvmrc
index 28193ca74f5..9a0c3d3f455 100644
--- a/kafka-ui-react-app/.nvmrc
+++ b/kafka-ui-react-app/.nvmrc
@@ -1,1 +1,1 @@
-v12.13.1
+v14.15.4
diff --git a/kafka-ui-react-app/package.json b/kafka-ui-react-app/package.json
index bd301d8f2d9..417cf021764 100644
--- a/kafka-ui-react-app/package.json
+++ b/kafka-ui-react-app/package.json
@@ -100,5 +100,8 @@
     "react-scripts": "4.0.1",
     "typescript": "~4.1.2"
   },
+  "engines": {
+    "node": ">=14.15.4"
+  },
   "proxy": "http://localhost:8080"
 }
diff --git a/pom.xml b/pom.xml
index 5ac9ab77b2c..2e145672735 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
 		<git.revision>latest</git.revision>
 		<zkclient.version>0.11</zkclient.version>
 		<kafka-clients.version>2.4.0</kafka-clients.version>
-		<node.version>v12.13.1</node.version>
+		<node.version>v14.15.4</node.version>
 		<dockerfile-maven-plugin.version>1.4.10</dockerfile-maven-plugin.version>
 		<frontend-maven-plugin.version>1.8.0</frontend-maven-plugin.version>
 		<maven-compiler-plugin.version>3.5.1</maven-compiler-plugin.version>
