diff --git a/package.json b/package.json
index 5e0dea486a7b69038f04887380bf120f12731c80..60e16f018f9e7d2719d7da77b4c7e76ba6430079 100644
--- a/package.json
+++ b/package.json
@@ -100,7 +100,7 @@
     "cuid": "^2.1.1",
     "express": "^4.16.3",
     "file-box": "^0.8.19",
-    "flash-store": "^0.4.0",
+    "flash-store": "^0.4.2",
     "fs-extra": "^6.0.1",
     "hot-import": "^0.2.1",
     "jimp": "^0.2.28",
diff --git a/src/puppet-padchat/bridge.ts b/src/puppet-padchat/bridge.ts
index 594758bbfe3d8cfd03c1f060fbc8768974ccc844..9cc1e03942ff235e1aedc9232ab37f91508f2805 100644
--- a/src/puppet-padchat/bridge.ts
+++ b/src/puppet-padchat/bridge.ts
@@ -64,7 +64,7 @@ export class Bridge extends PadchatRpc {
   private loginTimer?: NodeJS.Timer
 
   private selfId?   : string
-  private selfName? : string
+  // private selfName? : string
   // private password? : string
   // private nickname? : string
 
@@ -139,7 +139,16 @@ export class Bridge extends PadchatRpc {
     this.cacheRoomRawPayload       = new FlashStoreSync(path.join(baseDir, 'room-raw-payload'))
     this.cacheRoomMemberRawPayload = new FlashStoreSync(path.join(baseDir, 'room-member-raw-payload'))
 
-    log.silly('PuppetPadchatBridge', 'initCache() workdir="%s"', baseDir)
+    await this.cacheContactRawPayload.ready()
+    await this.cacheRoomRawPayload.ready()
+    await this.cacheRoomMemberRawPayload.ready()
+
+    log.verbose('PuppetPadchatBridge', 'initCache() inited %d Contacts, %d Rooms, %d RoomMembers, cachedir="%s"',
+                                      this.cacheContactRawPayload.size,
+                                      this.cacheRoomRawPayload.size,
+                                      this.cacheRoomMemberRawPayload.size,
+                                      baseDir,
+              )
   }
 
   private releaseCache(): void {
@@ -174,6 +183,17 @@ export class Bridge extends PadchatRpc {
     // await this.padchatRpc.start()
     await super.start()
 
+    this.on('padchat-logout', () => {
+      if (this.selfId) {
+        this.emit('logout')
+      } else {
+        /**
+         * PadchatRpc will receive 'logout' message multiple times when the server is logouted.
+         */
+        log.warn('PuppetPadchatBridge', 'start() on(padchat-logout) received but selfId is undefined')
+      }
+    })
+
     // this.padchatRpc.on('message', messageRawPayload => {
     //   log.silly('PuppetPadchatBridge', 'start() padchatRpc.on(message)')
     //   this.emit('message', messageRawPayload)
@@ -218,9 +238,9 @@ export class Bridge extends PadchatRpc {
       throw new Error('userId exist')
     }
     this.selfId = userId
-    if (userName) {
-      this.selfName  = userName
-    }
+    // if (userName) {
+    //   this.selfName  = userName
+    // }
 
     await this.stopCheckScan()
 
@@ -492,7 +512,7 @@ export class Bridge extends PadchatRpc {
 
     // const result = await this.padchatRpc.WXGetQRCode()
     const result = await this.WXGetQRCode()
-    if (!result) {
+    if (!result || !result.qr_code) {
       log.verbose('PuppetPadchatBridge', `emitLoginQrCode() result not found. Call WXInitialize() and try again ...`)
       // await this.padchatRpc.WXInitialize()
       await this.WXInitialize()
diff --git a/src/puppet-padchat/config.ts b/src/puppet-padchat/config.ts
index 07a390bc9df0df5bbec94122fe0de0be716e8006..0092fb683f0809c6fecb734d144ba88387ab99e0 100644
--- a/src/puppet-padchat/config.ts
+++ b/src/puppet-padchat/config.ts
@@ -4,22 +4,25 @@ import {
 
 export const WECHATY_PUPPET_PADCHAT_ENDPOINT = process.env['WECHATY_PUPPET_PADCHAT_ENDPOINT']  || 'ws://54.223.36.77:9091/wx'
 
-const WECHATY_PUPPET_PADCHAT_TOKEN = process.env['WECHATY_PUPPET_PADCHAT_TOKEN'] as string
-if (!WECHATY_PUPPET_PADCHAT_TOKEN) {
-  log.error('PuppetPadchatConfig', `
+function padchatToken() {
+  const token = process.env['WECHATY_PUPPET_PADCHAT_TOKEN'] as string
+  if (!token) {
+    log.error('PuppetPadchatConfig', `
 
-    WECHATY_PUPPET_PADCHAT_TOKEN environment variable not found.
+      WECHATY_PUPPET_PADCHAT_TOKEN environment variable not found.
 
-    PuppetPadchat need a token before it can be used,
-    Please set WECHATY_PUPPET_PADCHAT_TOKEN then retry again.
+      PuppetPadchat need a token before it can be used,
+      Please set WECHATY_PUPPET_PADCHAT_TOKEN then retry again.
 
 
-    Learn more about it at: https://github.com/Chatie/wechaty/issues/1296
+      Learn more about it at: https://github.com/Chatie/wechaty/issues/1296
 
-  `)
-  process.exit(1)
+    `)
+    throw new Error('set WECHATY_PUPPET_PADCHAT_TOKEN and try again')
+  }
+  return token
 }
 
 export {
-  WECHATY_PUPPET_PADCHAT_TOKEN,
+  padchatToken,
 }
diff --git a/src/puppet-padchat/padchat-rpc.ts b/src/puppet-padchat/padchat-rpc.ts
index 16976325d4fbe2f1c38d4c014093ba120648319e..b0733dc6fda934a578bdf1ab175ea8ddcff385da 100644
--- a/src/puppet-padchat/padchat-rpc.ts
+++ b/src/puppet-padchat/padchat-rpc.ts
@@ -205,7 +205,7 @@ export class PadchatRpc extends EventEmitter {
                                 payload.type,
                                 JSON.stringify(payload),
                   )
-      this.emit('logout', payload.msg)
+      this.emit('padchat-logout', payload.msg)
       return
     }
 
@@ -259,11 +259,11 @@ export class PadchatRpc extends EventEmitter {
     //             )
     // log.silly('PadchatRpc', 'onSocketPadchat(%s)', JSON.stringify(padchatPayload).substr(0, 500))
 
-    if (padchatPayload.type === PadchatPayloadType.Logout) {
-      // this.emit('logout', this.selfId())
-      console.log('onSocketPadchat: ', JSON.stringify(padchatPayload))
-      this.emit('logout')
-    }
+    // if (padchatPayload.type === PadchatPayloadType.Logout) {
+    //   // this.emit('logout', this.selfId())
+    //   console.log('onSocketPadchat: ', JSON.stringify(padchatPayload))
+    //   this.emit('logout')
+    // }
 
     let result: any
 
diff --git a/src/puppet-padchat/puppet-padchat.ts b/src/puppet-padchat/puppet-padchat.ts
index d3118efb74941ecbcdb102750a29ed5a8bc11411..9a25bc95649bf0bc744cfd0442ce1e5064781f64 100644
--- a/src/puppet-padchat/puppet-padchat.ts
+++ b/src/puppet-padchat/puppet-padchat.ts
@@ -53,7 +53,7 @@ import {
 }                   from '../config'
 
 import {
-  WECHATY_PUPPET_PADCHAT_TOKEN,
+  padchatToken,
   WECHATY_PUPPET_PADCHAT_ENDPOINT,
 }                                   from './config'
 
@@ -113,7 +113,7 @@ export class PuppetPadchat extends Puppet {
 
     this.bridge = new Bridge({
       memory   : this.options.memory,
-      token    : WECHATY_PUPPET_PADCHAT_TOKEN,
+      token    : padchatToken(),
       endpoint : WECHATY_PUPPET_PADCHAT_ENDPOINT,
     })
   }
diff --git a/src/puppet-padchat/pure-function-helper.ts b/src/puppet-padchat/pure-function-helper.ts
index fbdd469ac7645a75cacab7adc1ae7a0c217a9fd0..f3a34c8b10f3e211abb86225d2d7621fe51eeb47 100644
--- a/src/puppet-padchat/pure-function-helper.ts
+++ b/src/puppet-padchat/pure-function-helper.ts
@@ -327,6 +327,8 @@ export class PadchatPureFunctionHelper {
   }
 
   public static async imageBase64ToQrcode(base64: string): Promise<string> {
+    // console.log('base64: ', typeof base64, String(base64).substr(0, 500))
+
     const imageBuffer = Buffer.from(base64, 'base64')
 
     const future = new Promise<string>((resolve, reject) => {