fixed missing api url

Frontend/src/services/ApiService.js

@@ -92,7 +92,7 @@ const getLicenceList = async () => {
 };
 
 const getCertificate = async (workId) => {
-  await fetch(`${API_URL}/works/${workId}/certificate`, {
+  await fetch(`${REACT_APP_API}/works/${workId}/certificate`, {
     method: "GET",
     headers: {
       "Access-Control-Allow-Origin": "*",
@@ -109,7 +109,7 @@ const getCertificate = async (workId) => {
 };
 
 const getDownload = async (workId, filename) => {
-  await fetch(`${API_URL}/works/${workId}/download`, {
+  await fetch(`${REACT_APP_API}/works/${workId}/download`, {
     method: "GET",
     headers: {
       "Access-Control-Allow-Origin": "*",
@@ -126,7 +126,7 @@ const getDownload = async (workId, filename) => {
 };
 
 const getPublicDownload = async (grid) => {
-  window.open(`${API_URL}/works/public/${grid}/download`, "_blank")
+  window.open(`${REACT_APP_API}/works/public/${grid}/download`, "_blank")
 };
 
 const getPresignedAsset = async (
@@ -138,7 +138,7 @@ const getPresignedAsset = async (
 ) => {
   var keycloakUserId = UserService.getUserId();
   await fetch(
-    `${API_URL}/files/upload/presigned-url?filename=${filename}&userId=${keycloakUserId}`,
+    `${REACT_APP_API}/files/upload/presigned-url?filename=${filename}&userId=${keycloakUserId}`,
     {
       method: "GET",
       headers: {
@@ -195,7 +195,7 @@ const putAsset = async (url, file, setLoading) => {
 const postAsset = async (raw) => {
   console.log(JSON.stringify(raw));
 
-  await fetch("${API_URL}/works/register", {
+  await fetch("${REACT_APP_API}/works/register", {
     method: "POST",
     headers: {
       "Content-Type": "application/json",
@@ -224,7 +224,7 @@ const getUserWorkList = async (
   var keycloakUserId = UserService.getUserId();
 
   await fetch(
-    `${API_URL}/users/${keycloakUserId}/works?page=${page}&size=${size}`,
+    `${REACT_APP_API}/users/${keycloakUserId}/works?page=${page}&size=${size}`,
     {
       method: "GET",
       headers: {