diff --git a/webapp/platform/client/src/client4.test.ts b/webapp/platform/client/src/client4.test.ts
index a684b5199a..d6a4eed31d 100644
--- a/webapp/platform/client/src/client4.test.ts
+++ b/webapp/platform/client/src/client4.test.ts
@@ -68,6 +68,24 @@ describe('ClientError', () => {
         expect(copy.status_code).toEqual(error.status_code);
         expect(copy.url).toEqual(error.url);
     });
+
+    test('cause should be preserved when provided', () => {
+        const cause = new Error('the original error');
+        const error = new ClientError('https://example.com', {
+            message: 'This is a message',
+            server_error_id: 'test.app_error',
+            status_code: 418,
+            url: 'https://example.com/api/v4/error',
+        }, cause);
+
+        const copy = {...error};
+
+        expect(copy.message).toEqual(error.message);
+        expect(copy.server_error_id).toEqual(error.server_error_id);
+        expect(copy.status_code).toEqual(error.status_code);
+        expect(copy.url).toEqual(error.url);
+        expect(error.cause).toEqual(cause);
+    });
 });
 
 describe('trackEvent', () => {
diff --git a/webapp/platform/client/src/client4.ts b/webapp/platform/client/src/client4.ts
index 47e6741b0e..ba9d713775 100644
--- a/webapp/platform/client/src/client4.ts
+++ b/webapp/platform/client/src/client4.ts
@@ -4168,7 +4168,7 @@ export default class Client4 {
             throw new ClientError(this.getUrl(), {
                 message: 'Received invalid response from the server.',
                 url,
-            });
+            }, err);
         }
 
         if (headers.has(HEADER_X_VERSION_ID) && !headers.get('Cache-Control')) {
@@ -4311,8 +4311,8 @@ export class ClientError extends Error implements ServerError {
     server_error_id?: string;
     status_code?: number;
 
-    constructor(baseUrl: string, data: ServerError) {
-        super(data.message + ': ' + cleanUrlForLogging(baseUrl, data.url || ''));
+    constructor(baseUrl: string, data: ServerError, cause?: any) {
+        super(data.message + ': ' + cleanUrlForLogging(baseUrl, data.url || ''), {cause});
 
         this.message = data.message;
         this.url = data.url;
diff --git a/webapp/platform/client/tsconfig.json b/webapp/platform/client/tsconfig.json
index 992f9814f1..2dad4b02eb 100644
--- a/webapp/platform/client/tsconfig.json
+++ b/webapp/platform/client/tsconfig.json
@@ -2,7 +2,7 @@
     "compilerOptions": {
         "module": "commonjs",
         "moduleResolution": "node",
-        "target": "es6",
+        "target": "es2022",
         "declaration": true,
         "strict": true,
         "resolveJsonModule": true,