diff --git a/packages/koishi-core/src/adapter.ts b/packages/koishi-core/src/adapter.ts
index 578c5e95ef..dafa7e85ea 100644
--- a/packages/koishi-core/src/adapter.ts
+++ b/packages/koishi-core/src/adapter.ts
@@ -117,6 +117,7 @@ export namespace Adapter {
         logger.debug('websocket client opening')
         bot.status = Bot.Status.CONNECTING
         const socket = await this.prepare(bot)
+        const url = socket.url.replace(/\?.+/, '')
 
         socket.on('error', error => logger.debug(error))
 
@@ -126,7 +127,8 @@ export namespace Adapter {
           logger.debug(`websocket closed with ${code}`)
           if (!this._listening) return
 
-          const message = reason || `failed to connect to ${socket.url}`
+          // remove query args to protect privacy
+          const message = reason || `failed to connect to ${url}`
           let timeout = retryInterval
           if (_retryCount >= retryTimes) {
             if (this.app.status === App.Status.open) {
@@ -146,7 +148,7 @@ export namespace Adapter {
         socket.on('open', () => {
           _retryCount = 0
           bot.socket = socket
-          logger.debug('connect to ws server:', socket.url)
+          logger.info('connect to ws server:', url)
           this.connect(bot).then(() => {
             bot.status = Bot.Status.GOOD
             resolve()
diff --git a/packages/plugin-eval/src/main.ts b/packages/plugin-eval/src/main.ts
index 35c4a0b1a4..71aa9dca0d 100644
--- a/packages/plugin-eval/src/main.ts
+++ b/packages/plugin-eval/src/main.ts
@@ -184,17 +184,8 @@ export class EvalWorker {
     })
   }
 
-  addSetupFile(name: string, filename: string) {
-    if (this.config.setupFiles[name] === filename) return
-    const ctx = this[Context.current]
-    this.config.setupFiles[name] = filename
-    ctx.before('disconnect', () => {
-      delete this.config.setupFiles[name]
-    })
-  }
-
   // delegated class methods which use instance properties
-  // should be written in arrow functions
+  // should be written in arrow functions to ensure accessibility
   start = async () => {
     this.state = State.opening
     await this.ctx.parallel('eval/before-start')
diff --git a/packages/plugin-eval/src/worker/index.ts b/packages/plugin-eval/src/worker/index.ts
index fa9b09869b..54d9c3c1cf 100644
--- a/packages/plugin-eval/src/worker/index.ts
+++ b/packages/plugin-eval/src/worker/index.ts
@@ -161,7 +161,7 @@ export class WorkerHandle {
   async sync(scope: Scope) {
     await scope.user?._update()
     await scope.channel?._update()
-    const buffer = serialize(storage)
+    const buffer = serialize(scope.storage)
     await safeWriteFile(storagePath, buffer)
   }