diff --git a/backend/services/task.go b/backend/services/task.go
index 9654e8d5..ce62a95e 100644
--- a/backend/services/task.go
+++ b/backend/services/task.go
@@ -14,7 +14,6 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"reflect"
 	"runtime"
 	"runtime/debug"
 	"strconv"
@@ -183,14 +182,12 @@ func ExecuteShellCmd(cmdStr string, cwd string, t model.Task, s model.Spider) (e
 	if err := cmd.Wait(); err != nil {
 		log.Errorf("wait process finish error: %s", err.Error())
 		debug.PrintStack()
-
-		log.Infof("error type is  : %s", reflect.TypeOf(err).String())
 		if exitError, ok := err.(*exec.ExitError); ok {
 			exitCode := exitError.ExitCode()
 			log.Errorf("exit error, exit code: %d", exitCode)
 			// 非kill 的错误类型
 			if exitCode != -1 {
-				// 发生一次也需要保存
+				// 非手动kill保存为错误状态
 				t.Error = err.Error()
 				t.FinishTs = time.Now()
 				t.Status = constants.StatusError
diff --git a/frontend/package.json b/frontend/package.json
index f5d170c8..60ac5cc8 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "crawlab",
-  "version": "0.3.2",
+  "version": "0.3.4",
   "private": true,
   "scripts": {
     "serve": "vue-cli-service serve --ip=0.0.0.0 --mode=development",
diff --git a/frontend/src/views/layout/components/Navbar.vue b/frontend/src/views/layout/components/Navbar.vue
index 25d62e35..e294ad0c 100644
--- a/frontend/src/views/layout/components/Navbar.vue
+++ b/frontend/src/views/layout/components/Navbar.vue
@@ -9,7 +9,7 @@
       </span>
       <el-dropdown-menu slot="dropdown" class="user-dropdown">
         <el-dropdown-item>
-          <span style="display:block;">v0.3.2</span>
+          <span style="display:block;">v0.3.4</span>
         </el-dropdown-item>
         <el-dropdown-item>
           <span style="display:block;" @click="logout">{{$t('Logout')}}</span>