diff --git a/src/serverApiClient.ts b/src/serverApiClient.ts
index e58c9b53..1e472635 100644
--- a/src/serverApiClient.ts
+++ b/src/serverApiClient.ts
@@ -70,9 +70,10 @@ export class FingerprintJsServerApiClient {
         if (isEventError(err)) {
           throw err;
         }
+        const error = err.toString() === '[object Object]' ? JSON.stringify(err) : err.toString();
         throw {
           status: 0,
-          error: new Error(err.toString()),
+          error: error,
         };
       });
   }
diff --git a/tests/mocked-responses-tests/__snapshots__/getEventTests.spec.ts.snap b/tests/mocked-responses-tests/__snapshots__/getEventTests.spec.ts.snap
index a791a684..a9fc0445 100644
--- a/tests/mocked-responses-tests/__snapshots__/getEventTests.spec.ts.snap
+++ b/tests/mocked-responses-tests/__snapshots__/getEventTests.spec.ts.snap
@@ -1,5 +1,12 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`[Mocked response] Get Event Error with bad shape 1`] = `
+Object {
+  "error": "{\\"error\\":\\"Some text instead og shaped object\\",\\"status\\":404}",
+  "status": 0,
+}
+`;
+
 exports[`[Mocked response] Get Event with request_id 1`] = `
 Object {
   "products": Object {
diff --git a/tests/mocked-responses-tests/getEventTests.spec.ts b/tests/mocked-responses-tests/getEventTests.spec.ts
index 96dba592..4a6bc8cf 100644
--- a/tests/mocked-responses-tests/getEventTests.spec.ts
+++ b/tests/mocked-responses-tests/getEventTests.spec.ts
@@ -21,4 +21,80 @@ describe('[Mocked response] Get Event', () => {
 
     expect(response).toMatchSnapshot();
   });
+
+  test('403 error', async () => {
+    const errorInfo = {
+      code: 'TokenRequired',
+      message: 'secret key is required',
+    };
+    (fetch as unknown as jest.Mock).mockReturnValue(
+      Promise.resolve(
+        new Response(
+          JSON.stringify({
+            error: errorInfo,
+          }),
+          {
+            status: 403,
+          }
+        )
+      )
+    );
+    await expect(client.getEvent(existingRequestId)).rejects.toMatchObject({
+      status: 403,
+      error: errorInfo,
+    });
+  });
+
+  test('404 error', async () => {
+    const errorInfo = {
+      code: 'RequestNotFound',
+      message: 'request id is not found',
+    };
+    (fetch as unknown as jest.Mock).mockReturnValue(
+      Promise.resolve(
+        new Response(
+          JSON.stringify({
+            error: errorInfo,
+          }),
+          {
+            status: 404,
+          }
+        )
+      )
+    );
+    await expect(client.getEvent(existingRequestId)).rejects.toMatchObject({
+      status: 404,
+      error: errorInfo,
+    });
+  });
+
+  test('Error with bad shape', async () => {
+    const errorInfo = 'Some text instead og shaped object';
+    (fetch as unknown as jest.Mock).mockReturnValue(
+      Promise.resolve(
+        new Response(
+          JSON.stringify({
+            error: errorInfo,
+          }),
+          {
+            status: 404,
+          }
+        )
+      )
+    );
+    await expect(client.getEvent(existingRequestId)).rejects.toMatchSnapshot();
+  });
+
+  test('Error with bad JSON', async () => {
+    (fetch as unknown as jest.Mock).mockReturnValue(
+      Promise.resolve(
+        new Response('(Some bad JSON)', {
+          status: 404,
+        })
+      )
+    );
+    await expect(client.getEvent(existingRequestId)).rejects.toMatchObject({
+      status: 0,
+    });
+  });
 });
diff --git a/tests/mocked-responses-tests/getVisitorsTests.spec.ts b/tests/mocked-responses-tests/getVisitorsTests.spec.ts
index 816c5e60..a208bd1f 100644
--- a/tests/mocked-responses-tests/getVisitorsTests.spec.ts
+++ b/tests/mocked-responses-tests/getVisitorsTests.spec.ts
@@ -129,4 +129,17 @@ describe('[Mocked response] Get Visitors', () => {
       retryAfter: 1,
     });
   });
+
+  test('Error with bad JSON', async () => {
+    (fetch as unknown as jest.Mock).mockReturnValue(
+      Promise.resolve(
+        new Response('(Some bad JSON)', {
+          status: 404,
+        })
+      )
+    );
+    await expect(client.getVisitorHistory(existingVisitorId)).rejects.toMatchObject({
+      status: 0,
+    });
+  });
 });