diff --git a/gatewayservice/gateway-service.js b/gatewayservice/gateway-service.js
index 581468c4..8c4e7143 100644
--- a/gatewayservice/gateway-service.js
+++ b/gatewayservice/gateway-service.js
@@ -28,7 +28,7 @@ app.get("/health", (req, res) => {
   res.json({ status: "OK" });
 });
 
-var returnError = (res, error) => {
+let returnError = (res, error) => {
   console.log(error);
   res.status(error.response.status).json({ error: error.response.data.error });
 }
@@ -246,7 +246,7 @@ app.get("/ranking", async (req, res) => {
   }
 });
 
-var openapiPath='./openapi.yaml'
+let openapiPath='./openapi.yaml'
 if (fs.existsSync(openapiPath)) {
   const file = fs.readFileSync(openapiPath, 'utf8');
 
diff --git a/webapp/src/components/CustomModal/CustomModal.js b/webapp/src/components/CustomModal/CustomModal.js
index bcf6c0ad..31f1706e 100644
--- a/webapp/src/components/CustomModal/CustomModal.js
+++ b/webapp/src/components/CustomModal/CustomModal.js
@@ -1,6 +1,5 @@
 import React from 'react';
-import { Button, Modal, ModalOverlay, ModalContent, ModalHeader, ModalCloseButton, ModalBody, ModalFooter } from '@chakra-ui/react';
-import { useDisclosure } from '@chakra-ui/react';
+import { Button, Modal, ModalOverlay, ModalContent, ModalHeader, ModalCloseButton, ModalBody, ModalFooter, useDisclosure } from '@chakra-ui/react';
 import { useNavigate } from 'react-router-dom';
 
 const CustomModal = ({ title, text, route }) => {
diff --git a/webapp/src/components/Profile/Profile.js b/webapp/src/components/Profile/Profile.js
index 6b6b24f8..c4816a6c 100644
--- a/webapp/src/components/Profile/Profile.js
+++ b/webapp/src/components/Profile/Profile.js
@@ -70,7 +70,7 @@ const Perfil = () => {
                           </Thead>
                           <Tbody>
                             {userData.games.slice(0, 10).map((game, index) => (
-                            <Tr key={index}>
+                            <Tr>
                               <Td textAlign={"center"}>{game.gamemode}</Td>
                               <Td textAlign={"center"}>{game.gamemode === 'calculadora' ? '-' : game.correctAnswers}</Td>
                               <Td textAlign={"center"}>{game.gamemode === 'calculadora' ? '-' : game.incorrectAnswers}</Td>
diff --git a/webapp/src/pages/Bateria/Bateria.js b/webapp/src/pages/Bateria/Bateria.js
index e9c868a3..babd88ec 100644
--- a/webapp/src/pages/Bateria/Bateria.js
+++ b/webapp/src/pages/Bateria/Bateria.js
@@ -223,7 +223,6 @@ const JuegoPreguntas = () => {
               <Grid templateColumns="repeat(2, 1fr)" gap={4} mt={4}>
                 {preguntaActual.respuestas.map((respuesta, index) => (
                   <Button
-                    key={index}
                     onClick={() => handleSiguientePregunta(respuesta)}
                     disabled={tiempoRestante === 0 || juegoTerminado}
                     whiteSpace={"normal"}