cocoapods启动失败：rror: RPC failed; curl 56 SSLRead() return error -9845

如题，执行sudo gem install cocoapods安装完后尝试启动失败。错误信息如下：APPLEdeiMac:~ apple$ pod search fmdb
Setting up CocoaPods master repo
[!] /usr/bin/git clone https://github.com/CocoaPods/Specs.git masterCloning into 'master'...
error: RPC failed; curl 56 SSLRead() return error -9845
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed尝试删除~/.cocoapods后重新安装：
APPLEdeiMac:~ apple$ sudo gem install cocopods -V
Password:
Getting SRV record failed: DNS result has no information for _rubygems._tcp.ruby.taobao.org
HEAD https://ruby.taobao.org/api/v1/dependencies
200 OK
GET https://ruby.taobao.org/api/v1/dependencies?gems=cocopods
200 OK
ERROR:  Could not find a valid gem 'cocopods' (>= 0) in any repository
GET https://ruby.taobao.org/latest_specs.4.8.gz
302 Moved Temporarily
GET https://rubygems-china.oss-cn-hangzhou.aliyuncs.com/latest_specs.4.8.gz
200 OK
ERROR:  Possible alternatives: cocoapods, cocoaout, cocoon, coords, coupons不知道这个error是否有影响？
ERROR:  Possible alternatives: cocoapods, cocoaout, cocoon, coords, coupons