diff --git a/autoload/SpaceVim/plugins/manager.vim b/autoload/SpaceVim/plugins/manager.vim
index 4b7769ec7..fc2ef8776 100644
--- a/autoload/SpaceVim/plugins/manager.vim
+++ b/autoload/SpaceVim/plugins/manager.vim
@@ -550,10 +550,12 @@ function! s:open_plugin_dir() abort
     enew
     exe 'resize ' . &lines * 30 / 100
     let shell = empty($SHELL) ? SpaceVim#api#import('system').isWindows ? 'cmd.exe' : 'bash' : $SHELL
-    if has('nvim')
+    if has('nvim') && exists('*termopen')
       call termopen(shell, {'cwd' : dein#get(keys(plugin)[0]).path})
-    else
+    elseif exists('*term_start')
       call term_start(shell, {'curwin' : 1, 'term_finish' : 'close', 'cwd' : dein#get(keys(plugin)[0]).path})
+    else
+      exe 'VimShell ' .  dein#get(keys(plugin)[0]).path
     endif
   endif
 endfunction
diff --git a/docs/cn/development.md b/docs/cn/development.md
index 354051ad3..f01714b91 100644
--- a/docs/cn/development.md
+++ b/docs/cn/development.md
@@ -14,6 +14,7 @@ lang: cn
   - [证书](#证书)
   - [公约](#公约)
   - [拉取请求](#拉取请求)
+    - [PR 标题前缀](#pr-标题前缀)
     - [在上游的主分支顶部压缩你的PR分支](#在上游的主分支顶部压缩你的pr分支)
     - [抽象化的简单 PRs(绝大多数PRs都是这样的):](#抽象化的简单-prs绝大多数prs都是这样的)
     - [复杂的PRs (大的重构, 等):](#复杂的prs-大的重构-等)
@@ -80,6 +81,21 @@ SpaceVim 建立在下面的公约上: 该公约主要包括了 函数的命名,
 
 ### 拉取请求
 
+#### PR 标题前缀
+
+新开 pull request 时，应当标记该 PR 属于以下哪种前缀：
+
+- `Add:` 添加一新的特性
+- `Change:` 修改已有特性的行为
+- `Fixed:` 修复某些问题
+- `Remove:` 移除原先支持的某种特性
+- `Doc:` 更新帮助文档
+- `Website:` 更新网站内容
+
+示例如下：
+
+`Website: update the lang#c layer page`
+
 #### 在上游的主分支顶部压缩你的PR分支
 
 - fork SpaceVim 仓库
diff --git a/docs/development.md b/docs/development.md
index f05ea55fd..83b85cf23 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -91,6 +91,7 @@ pull request title should contains one of these prefix:
 
 - `Add:` Adding a new feature.
 - `Change:` Change default behaviors or the existing features.
+- `Fixed:` Fix some bugs
 - `Remove:` Remove any existing features.
 - `Doc:` update the help file.
 - `Website:` Update the contend of website.
diff --git a/wiki/en/Following-HEAD.md b/wiki/en/Following-HEAD.md
index a9d471c86..bcc569d30 100644
--- a/wiki/en/Following-HEAD.md
+++ b/wiki/en/Following-HEAD.md
@@ -18,6 +18,10 @@ The next release is v0.9.0.
 - Change the option name `enable_statusline_display_mode` to `enable_statusline_mode` ([#1843](https://github.com/SpaceVim/SpaceVim/pull/1843))
 - Recover spell and list option in go layer ([#1872](https://github.com/SpaceVim/SpaceVim/pull/1872))
 
+### Fixed
+
+- Fix plugins manager, unkown function `term_start` ([#1881](https://github.com/SpaceVim/SpaceVim/pull/1881))
+
 ### Removed
 
 ### Doc, Wiki && Website