diff --git a/client/desk/formpage.js b/client/desk/formpage.js
index 40193215..58db93f8 100644
--- a/client/desk/formpage.js
+++ b/client/desk/formpage.js
@@ -42,7 +42,7 @@ module.exports = class FormPage extends Page {
             await this.form.setDoc(params.doctype, params.name);
             frappe.desk.setActiveDoc(this.form.doc);
         } catch (e) {
-            this.renderError(e.status_code, e.message);
+            this.renderError(e.statusCode, e.message);
         }
     }
 }
diff --git a/common/errors.js b/common/errors.js
index a66113cf..7a5628a0 100644
--- a/common/errors.js
+++ b/common/errors.js
@@ -1,22 +1,35 @@
 class BaseError extends Error {
-    constructor(status_code, ...params) {
+    constructor(statusCode, ...params) {
         super(...params);
-        this.status_code = status_code;
+        this.statusCode = statusCode;
     }
 }
 
 class ValidationError extends BaseError {
-    constructor(...params) { super(417, ...params); }
+    constructor(...params) {
+        super(417, ...params);
+    }
 }
 
-module.exports = {
-    ValidationError: ValidationError,
-    ValueError: class ValueError extends ValidationError { },
-    Conflict: class Conflict extends ValidationError { },
-    NotFound: class NotFound extends BaseError {
-        constructor(...params) { super(404, ...params); }
-    },
-    Forbidden: class Forbidden extends BaseError {
-        constructor(...params) { super(403, ...params); }
-    },
+class NotFound extends BaseError {
+    constructor(...params) {
+        super(404, ...params);
+    }
+}
+
+class Forbidden extends BaseError {
+    constructor(...params) {
+        super(403, ...params);
+    }
+}
+
+class ValueError extends ValidationError { }
+class Conflict extends ValidationError { }
+
+module.exports = {
+    ValidationError,
+    ValueError,
+    Conflict,
+    NotFound,
+    Forbidden
 }
diff --git a/model/naming.js b/model/naming.js
index bb4304bb..ced7c208 100644
--- a/model/naming.js
+++ b/model/naming.js
@@ -62,10 +62,11 @@ module.exports = {
         try {
             series = await frappe.getDoc('NumberSeries', prefix);
         } catch (e) {
-            if (!e.status_code || e.status_code !== 404) {
+            if (!e.statusCode || e.statusCode !== 404) {
                 throw e;
             }
             await this.createNumberSeries(prefix);
+            series = await frappe.getDoc('NumberSeries', prefix);
         }
         let next = await series.next()
         return prefix + next;
diff --git a/tests/test_document.js b/tests/test_document.js
index 87700b03..65d3c39a 100644
--- a/tests/test_document.js
+++ b/tests/test_document.js
@@ -67,7 +67,7 @@ describe('Document', () => {
         assert.equal(await frappe.db.getValue(doc.doctype, doc.name), null);
     });
 
-    it('should add, fetch and delete documents with children', async() => {
+    it('should add, fetch and delete documents with children', async () => {
         if (!await frappe.db.exists('Role', 'Test Role 1')) {
             await frappe.insert({doctype: 'Role', name: 'Test Role'});
             await frappe.insert({doctype: 'Role', name: 'Test Role 1'});
@@ -76,7 +76,8 @@ describe('Document', () => {
         let user = frappe.newDoc({
             doctype: 'User',
             name: frappe.getRandomString(),
-            full_name: 'Test User',
+            fullName: 'Test User',
+            password: frappe.getRandomString(),
             roles: [
                 {
                     role: 'Test Role'
diff --git a/tests/test_naming.js b/tests/test_naming.js
index f29a40bb..cc85a87e 100644
--- a/tests/test_naming.js
+++ b/tests/test_naming.js
@@ -10,9 +10,9 @@ describe('Naming', () => {
 
     it('should start a series and get next value', async () => {
         frappe.db.delete('NumberSeries', 'test-series-')
-        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-1');
-        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-2');
-        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-3');
+        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-1001');
+        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-1002');
+        assert.equal(await naming.getSeriesNext('test-series-'), 'test-series-1003');
     });
 
     it('should set name by autoincrement', async () => {
diff --git a/tests/test_restAPI.js b/tests/test_restAPI.js
index e4343b7e..2416d1c2 100644
--- a/tests/test_restAPI.js
+++ b/tests/test_restAPI.js
@@ -16,7 +16,7 @@ describe('REST', () => {
         });
 
         await frappe.init();
-        await frappe.login();
+        await frappe.login('Administrator');
 
         frappe.db = await new HTTPClient({server: 'localhost:8000'});
         frappe.fetch = fetch;
diff --git a/utils/index.js b/utils/index.js
index 0f71b461..309dcd5f 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -61,7 +61,7 @@ function asyncHandler(fn) {
         .catch((err) => {
             console.log(err);
             // handle error
-            res.status(err.status_code || 500).send({error: err.message});
+            res.status(err.statusCode || 500).send({error: err.message});
         });
 }