迁移mm-wiki到其他服务器后，访问一会儿页面，容器自动 Exited

1. 当前使用的版本号
   v0.1.9

2. 是否已经升级到新版本
   最新版本

3. 当前遇到的问题
   mysql 数据库主主模式，wiki 通过 VIP 连接，wiki 数据拷贝到另外一台服务器，容器启动后，页面访问一会儿，容器就自动退出了。

4. 错误日志或截图
   2020/05/30 23:44:18.034 [I] [asm_amd64.s:1373] http server Running on http://0.0.0.0:8081
   2020/05/30 23:44:19.609 [C] [panic.go:967] the request url is /author/logout
   2020/05/30 23:44:19.609 [C] [panic.go:967] Handler crashed with error interface conversion: interface {} is nil, not map[string]string
   2020/05/30 23:44:19.609 [C] [panic.go:967] /usr/local/go/src/runtime/panic.go:967
   2020/05/30 23:44:19.609 [C] [panic.go:967] /usr/local/go/src/runtime/iface.go:260
   2020/05/30 23:44:19.609 [C] [panic.go:967] /app/mm-wiki/app/controllers/template.go:318
   2020/05/30 23:44:19.610 [C] [panic.go:967] /app/mm-wiki/app/controllers/template.go:346
   2020/05/30 23:44:19.610 [C] [panic.go:967] /app/mm-wiki/app/controllers/author.go:202
   2020/05/30 23:44:19.610 [C] [panic.go:967] /usr/local/go/src/reflect/value.go:460
   2020/05/30 23:44:19.610 [C] [panic.go:967] /usr/local/go/src/reflect/value.go:321
   2020/05/30 23:44:19.610 [C] [panic.go:967] /go/pkg/mod/github.com/astaxie/beego@v1.12.0/router.go:853
   2020/05/30 23:44:19.610 [C] [panic.go:967] /usr/local/go/src/net/http/server.go:2807
   2020/05/30 23:44:19.610 [C] [panic.go:967] /usr/local/go/src/net/http/server.go:1895
   2020/05/30 23:44:19.610 [C] [panic.go:967] /usr/local/go/src/runtime/asm_amd64.s:1373
   2020/05/30 23:44:47.785 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:44:47.792 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish
   2020/05/30 23:44:48.128 [I] [doc_search.go:25] [loadSearchIndex] add index finish
   2020/05/30 23:44:48.538 [I] [doc_search.go:25] [loadSearchIndex] index flush finish
   2020/05/30 23:45:18.540 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:45:18.549 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish
   2020/05/30 23:45:19.060 [I] [doc_search.go:25] [loadSearchIndex] add index finish
   2020/05/30 23:45:19.594 [I] [doc_search.go:25] [loadSearchIndex] index flush finish
   2020/05/30 23:45:49.622 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:45:49.766 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish
   2020/05/30 23:51:39.063 [I] [doc_search.go:14] [loadSearchIndex] start load doc index
   2020/05/30 23:51:39.065 [I] [doc_search.go:14] [loadSearchIndex] get all doc finish
   2020/05/30 23:51:39.462 [I] [doc_search.go:14] [loadSearchIndex] add index finish
   2020/05/30 23:51:40.145 [I] [doc_search.go:14] [loadSearchIndex] index flush finish
   2020/05/30 23:51:40.424 [I] [asm_amd64.s:1373] http server Running on http://0.0.0.0:8081
   2020/05/30 23:52:10.149 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:52:10.157 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish
   2020/05/30 23:52:10.257 [I] [doc_search.go:25] [loadSearchIndex] add index finish
   2020/05/30 23:52:10.712 [I] [doc_search.go:25] [loadSearchIndex] index flush finish
   2020/05/30 23:52:40.714 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:52:40.718 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish
   2020/05/30 23:52:40.897 [I] [doc_search.go:25] [loadSearchIndex] add index finish
   2020/05/30 23:52:41.920 [I] [doc_search.go:25] [loadSearchIndex] index flush finish
   2020/05/30 23:53:11.934 [I] [doc_search.go:25] [loadSearchIndex] start load doc index
   2020/05/30 23:53:11.939 [I] [doc_search.go:25] [loadSearchIndex] get all doc finish

5. 希望增加的功能
   N/A