diff --git a/backends/database.js b/backends/database.js
index caef28fa..edcb5dd0 100644
--- a/backends/database.js
+++ b/backends/database.js
@@ -537,7 +537,7 @@ module.exports = class Database extends Observable {
       , 'Read Only': 'text'
       , 'File': 'text'
       , 'Attach': 'text'
-      , 'Attach Image': 'text'
+      , 'AttachImage': 'text'
       , 'Signature': 'text'
       , 'Color': 'text'
       , 'Barcode': 'text'
diff --git a/backends/sqlite.js b/backends/sqlite.js
index c5472012..00e51c44 100644
--- a/backends/sqlite.js
+++ b/backends/sqlite.js
@@ -237,7 +237,8 @@ module.exports = class sqliteDatabase extends Database {
       this.conn.run(query, params, (err) => {
         if (err) {
           console.error('Error in sql:', query);
-          reject(err);
+          let Error = this.getError(err.errno);
+          reject(new Error());
         } else {
           resolve();
         }
@@ -291,11 +292,17 @@ module.exports = class sqliteDatabase extends Database {
       , 'Read Only': 'text'
       , 'File': 'text'
       , 'Attach': 'text'
-      , 'Attach Image': 'text'
+      , 'AttachImage': 'text'
       , 'Signature': 'text'
       , 'Color': 'text'
       , 'Barcode': 'text'
       , 'Geolocation': 'text'
     }
   }
+
+  getError(errCode) {
+    return {
+      19: frappe.errors.DuplicateEntryError
+    }[errCode] || Error;
+  }
 }
diff --git a/common/errors.js b/common/errors.js
index fdb06a0f..7daad6a2 100644
--- a/common/errors.js
+++ b/common/errors.js
@@ -1,53 +1,66 @@
 const frappe = require('frappejs');
 
 class BaseError extends Error {
-    constructor(statusCode, ...params) {
-        super(...params);
-        this.statusCode = statusCode;
-    }
+  constructor(statusCode, message) {
+    super(message);
+    this.name = 'BaseError';
+    this.statusCode = statusCode;
+    this.message = message;
+  }
 }
 
 class ValidationError extends BaseError {
-    constructor(...params) {
-        super(417, ...params);
-    }
+  constructor(message) {
+    super(417, message);
+    this.name = 'ValidationError';
+  }
 }
 
-class NotFound extends BaseError {
-    constructor(...params) {
-        super(404, ...params);
-    }
+class NotFoundError extends BaseError {
+  constructor(message) {
+    super(404, message);
+    this.name = 'NotFoundError';
+  }
 }
 
-class Forbidden extends BaseError {
-    constructor(...params) {
-        super(403, ...params);
-    }
+class ForbiddenError extends BaseError {
+  constructor(message) {
+    super(403, message);
+    this.name = 'ForbiddenError';
+  }
 }
 
-class ValueError extends ValidationError { }
-class Conflict extends ValidationError { }
+class DuplicateEntryError extends ValidationError {
+  constructor(message) {
+    super(message);
+    this.name = 'DuplicateEntryError';
+  }
+}
 
-function throwError(message, error='ValidationError') {
-    const errorClass = {
-        'ValidationError': ValidationError,
-        'NotFound': NotFound,
-        'Forbidden': Forbidden,
-        'ValueError': ValueError,
-        'Conflict': Conflict
-    };
-    const err = new errorClass[error](message);
-    frappe.events.trigger('throw', { message, stackTrace: err.stack });
-    throw err;
+class ValueError extends ValidationError {}
+class Conflict extends ValidationError {}
+
+function throwError(message, error = 'ValidationError') {
+  const errorClass = {
+    ValidationError: ValidationError,
+    NotFoundError: NotFoundError,
+    ForbiddenError: ForbiddenError,
+    ValueError: ValueError,
+    Conflict: Conflict
+  };
+  const err = new errorClass[error](message);
+  frappe.events.trigger('throw', { message, stackTrace: err.stack });
+  throw err;
 }
 
 frappe.throw = throwError;
 
 module.exports = {
-    ValidationError,
-    ValueError,
-    Conflict,
-    NotFound,
-    Forbidden,
-    throw: throwError
-}
+  ValidationError,
+  ValueError,
+  Conflict,
+  NotFoundError,
+  ForbiddenError,
+  DuplicateEntryError,
+  throw: throwError
+};