diff --git a/object/syncer.go b/object/syncer.go
index b827ce79..dcaa021d 100644
--- a/object/syncer.go
+++ b/object/syncer.go
@@ -48,6 +48,7 @@ type Syncer struct {
 	TableColumns     []*TableColumn `xorm:"mediumtext" json:"tableColumns"`
 	AffiliationTable string         `xorm:"varchar(100)" json:"affiliationTable"`
 	AvatarBaseUrl    string         `xorm:"varchar(100)" json:"avatarBaseUrl"`
+	ErrorText        string         `xorm:"mediumtext" json:"errorText"`
 	SyncInterval     int            `json:"syncInterval"`
 	IsEnabled        bool           `json:"isEnabled"`
 
@@ -147,6 +148,22 @@ func UpdateSyncer(id string, syncer *Syncer) bool {
 	return affected != 0
 }
 
+func updateSyncerErrorText(syncer *Syncer, line string) bool {
+	s := getSyncer(syncer.Owner, syncer.Name)
+	if s == nil {
+		return false
+	}
+
+	s.ErrorText = s.ErrorText + line
+
+	affected, err := adapter.Engine.ID(core.PK{s.Owner, s.Name}).Cols("error_text").Update(s)
+	if err != nil {
+		panic(err)
+	}
+
+	return affected != 0
+}
+
 func AddSyncer(syncer *Syncer) bool {
 	affected, err := adapter.Engine.Insert(syncer)
 	if err != nil {
diff --git a/object/syncer_sync.go b/object/syncer_sync.go
index 569ef56e..733831bf 100644
--- a/object/syncer_sync.go
+++ b/object/syncer_sync.go
@@ -14,13 +14,25 @@
 
 package object
 
-import "fmt"
+import (
+	"fmt"
+	"time"
+)
 
 func (syncer *Syncer) syncUsers() {
 	fmt.Printf("Running syncUsers()..\n")
 
 	users, userMap := syncer.getUserMap()
-	oUsers, oUserMap := syncer.getOriginalUserMap()
+	oUsers, oUserMap, err := syncer.getOriginalUserMap()
+	if err != nil {
+		fmt.Printf(err.Error())
+
+		timestamp := time.Now().Format("2006-01-02 15:04:05")
+		line := fmt.Sprintf("[%s] %s\n", timestamp, err.Error())
+		updateSyncerErrorText(syncer, line)
+		return
+	}
+
 	fmt.Printf("Users: %d, oUsers: %d\n", len(users), len(oUsers))
 
 	var affiliationMap map[int]string
diff --git a/object/syncer_user.go b/object/syncer_user.go
index c3cf36ca..d415821e 100644
--- a/object/syncer_user.go
+++ b/object/syncer_user.go
@@ -25,42 +25,45 @@ import (
 
 type OriginalUser = User
 
-func (syncer *Syncer) getOriginalUsers() []*OriginalUser {
+func (syncer *Syncer) getOriginalUsers() ([]*OriginalUser, error) {
 	sql := fmt.Sprintf("select * from %s", syncer.getTable())
 	results, err := syncer.Adapter.Engine.QueryString(sql)
 	if err != nil {
-		panic(err)
+		return nil, err
 	}
 
-	return syncer.getOriginalUsersFromMap(results)
+	return syncer.getOriginalUsersFromMap(results), nil
 }
 
-func (syncer *Syncer) getOriginalUserMap() ([]*OriginalUser, map[string]*OriginalUser) {
-	users := syncer.getOriginalUsers()
+func (syncer *Syncer) getOriginalUserMap() ([]*OriginalUser, map[string]*OriginalUser, error) {
+	users, err := syncer.getOriginalUsers()
+	if err != nil {
+		return users, nil, err
+	}
 
 	m := map[string]*OriginalUser{}
 	for _, user := range users {
 		m[user.Id] = user
 	}
-	return users, m
+	return users, m, nil
 }
 
-func (syncer *Syncer) addUser(user *OriginalUser) bool {
+func (syncer *Syncer) addUser(user *OriginalUser) (bool, error) {
 	m := syncer.getMapFromOriginalUser(user)
 	keyString, valueString := syncer.getSqlKeyValueStringFromMap(m)
 
 	sql := fmt.Sprintf("insert into %s (%s) values (%s)", syncer.getTable(), keyString, valueString)
 	res, err := syncer.Adapter.Engine.Exec(sql)
 	if err != nil {
-		panic(err)
+		return false, err
 	}
 
 	affected, err := res.RowsAffected()
 	if err != nil {
-		panic(err)
+		return false, err
 	}
 
-	return affected != 0
+	return affected != 0, nil
 }
 
 /*func (syncer *Syncer) getOriginalColumns() []string {
@@ -84,7 +87,7 @@ func (syncer *Syncer) getCasdoorColumns() []string {
 	return res
 }
 
-func (syncer *Syncer) updateUser(user *OriginalUser) bool {
+func (syncer *Syncer) updateUser(user *OriginalUser) (bool, error) {
 	m := syncer.getMapFromOriginalUser(user)
 	pkValue := m[syncer.TablePrimaryKey]
 	delete(m, syncer.TablePrimaryKey)
@@ -93,22 +96,22 @@ func (syncer *Syncer) updateUser(user *OriginalUser) bool {
 	sql := fmt.Sprintf("update %s set %s where %s = %s", syncer.getTable(), setString, syncer.TablePrimaryKey, pkValue)
 	res, err := syncer.Adapter.Engine.Exec(sql)
 	if err != nil {
-		panic(err)
+		return false, err
 	}
 
 	affected, err := res.RowsAffected()
 	if err != nil {
-		panic(err)
+		return false, err
 	}
 
-	return affected != 0
+	return affected != 0, nil
 }
 
-func (syncer *Syncer) updateUserForOriginalFields(user *User) bool {
+func (syncer *Syncer) updateUserForOriginalFields(user *User) (bool, error) {
 	owner, name := util.GetOwnerAndNameFromId(user.GetId())
 	oldUser := getUserById(owner, name)
 	if oldUser == nil {
-		return false
+		return false, nil
 	}
 
 	if user.Avatar != oldUser.Avatar && user.Avatar != "" {
@@ -119,10 +122,10 @@ func (syncer *Syncer) updateUserForOriginalFields(user *User) bool {
 	columns = append(columns, "affiliation", "hash", "pre_hash")
 	affected, err := adapter.Engine.ID(core.PK{oldUser.Owner, oldUser.Name}).Cols(columns...).Update(user)
 	if err != nil {
-		panic(err)
+		return false, err
 	}
 
-	return affected != 0
+	return affected != 0, nil
 }
 
 func (syncer *Syncer) calculateHash(user *OriginalUser) string {
diff --git a/web/src/SyncerEditPage.js b/web/src/SyncerEditPage.js
index 5d534ff5..c046de36 100644
--- a/web/src/SyncerEditPage.js
+++ b/web/src/SyncerEditPage.js
@@ -21,6 +21,11 @@ import * as Setting from "./Setting";
 import i18next from "i18next";
 import SyncerTableColumnTable from "./SyncerTableColumnTable";
 
+import {Controlled as CodeMirror} from 'react-codemirror2';
+import "codemirror/lib/codemirror.css";
+require('codemirror/theme/material-darker.css');
+require("codemirror/mode/javascript/javascript");
+
 const { Option } = Select;
 
 class SyncerEditPage extends React.Component {
@@ -248,6 +253,22 @@ class SyncerEditPage extends React.Component {
             }} />
           </Col>
         </Row>
+        <Row style={{marginTop: '20px'}} >
+          <Col style={{marginTop: '5px'}} span={(Setting.isMobile()) ? 22 : 2}>
+            {Setting.getLabel(i18next.t("syncer:Error text"), i18next.t("syncer:Error text - Tooltip"))} :
+          </Col>
+          <Col span={22} >
+            <div style={{width: "100%", height: "300px"}} >
+              <CodeMirror
+                value={this.state.syncer.errorText}
+                options={{mode: 'javascript', theme: "material-darker"}}
+                onBeforeChange={(editor, data, value) => {
+                  this.updateSyncerField("errorText", value);
+                }}
+              />
+            </div>
+          </Col>
+        </Row>
         <Row style={{marginTop: '20px'}} >
           <Col style={{marginTop: '5px'}} span={(Setting.isMobile()) ? 19 : 2}>
             {Setting.getLabel(i18next.t("general:Is enabled"), i18next.t("general:Is enabled - Tooltip"))} :
diff --git a/web/src/locales/de/data.json b/web/src/locales/de/data.json
index ea06af90..f145f747 100644
--- a/web/src/locales/de/data.json
+++ b/web/src/locales/de/data.json
@@ -386,6 +386,8 @@
     "Database type": "Datenbanktyp",
     "Database type - Tooltip": "Datenbanktyp - Tooltip",
     "Edit Syncer": "Syncer bearbeiten",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "Ist gehasht",
     "Sync interval": "Sync-Intervall",
     "Sync interval - Tooltip": "Sync-Intervall - Tooltip",
diff --git a/web/src/locales/en/data.json b/web/src/locales/en/data.json
index b63d2b9d..f202a3dd 100644
--- a/web/src/locales/en/data.json
+++ b/web/src/locales/en/data.json
@@ -386,6 +386,8 @@
     "Database type": "Database type",
     "Database type - Tooltip": "Database type - Tooltip",
     "Edit Syncer": "Edit Syncer",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "Is hashed",
     "Sync interval": "Sync interval",
     "Sync interval - Tooltip": "Sync interval - Tooltip",
diff --git a/web/src/locales/fr/data.json b/web/src/locales/fr/data.json
index 902d33bd..078b4f5a 100644
--- a/web/src/locales/fr/data.json
+++ b/web/src/locales/fr/data.json
@@ -386,6 +386,8 @@
     "Database type": "Type de base de données",
     "Database type - Tooltip": "Type de base de données - infobulle",
     "Edit Syncer": "Editer le synchro",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "Est haché",
     "Sync interval": "Intervalle de synchronisation",
     "Sync interval - Tooltip": "Intervalle de synchronisation - infobulle",
diff --git a/web/src/locales/ja/data.json b/web/src/locales/ja/data.json
index fc3bde85..037b724a 100644
--- a/web/src/locales/ja/data.json
+++ b/web/src/locales/ja/data.json
@@ -386,6 +386,8 @@
     "Database type": "データベースの種類",
     "Database type - Tooltip": "データベース タイプ - ツールチップ",
     "Edit Syncer": "同期ツールを編集",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "ハッシュされました",
     "Sync interval": "同期間隔",
     "Sync interval - Tooltip": "同期間隔 - ツールチップ",
diff --git a/web/src/locales/ko/data.json b/web/src/locales/ko/data.json
index 4b98484e..d835084b 100644
--- a/web/src/locales/ko/data.json
+++ b/web/src/locales/ko/data.json
@@ -386,6 +386,8 @@
     "Database type": "Database type",
     "Database type - Tooltip": "Database type - Tooltip",
     "Edit Syncer": "Edit Syncer",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "Is hashed",
     "Sync interval": "Sync interval",
     "Sync interval - Tooltip": "Sync interval - Tooltip",
diff --git a/web/src/locales/ru/data.json b/web/src/locales/ru/data.json
index 9fe1ac71..1787e9ca 100644
--- a/web/src/locales/ru/data.json
+++ b/web/src/locales/ru/data.json
@@ -386,6 +386,8 @@
     "Database type": "Тип базы данных",
     "Database type - Tooltip": "Тип базы данных - Подсказка",
     "Edit Syncer": "Изменить синхронизатор",
+    "Error text": "Error text",
+    "Error text - Tooltip": "Error text - Tooltip",
     "Is hashed": "Хэшировано",
     "Sync interval": "Интервал синхронизации",
     "Sync interval - Tooltip": "Интервал синхронизации - Tooltip",
diff --git a/web/src/locales/zh/data.json b/web/src/locales/zh/data.json
index 2d427b72..a20c0b41 100644
--- a/web/src/locales/zh/data.json
+++ b/web/src/locales/zh/data.json
@@ -386,6 +386,8 @@
     "Database type": "数据库类型",
     "Database type - Tooltip": "数据库类型",
     "Edit Syncer": "编辑同步器",
+    "Error text": "错误信息",
+    "Error text - Tooltip": "同步器连接数据库时发生的错误",
     "Is hashed": "是否参与哈希计算",
     "Sync interval": "同步间隔",
     "Sync interval - Tooltip": "单位为秒",