我试图在流浪汉上启动Rails服务器，但不能。 错误消息在这里。
Could not find gem 'sqlite3 (~> 1.4.0)' in any of the gem sources listed in your Gemfile.
Run `bundle install` to install missing gems.
我做了bundle install，但是...
An error occurred while installing sassc (2.3.0), and Bundler cannot
continue.
Make sure that `gem install sassc -v '2.3.0' --source 'https://rubygems.org/'`
succeeds before bundling.
然后我做了
$ gem install sassc -v'2.3.0'--source'https://rubygems.org/'
消息是
Building native extensions. This could take a while...
ERROR: Error installing sassc:
ERROR: Failed to build gem native extension.
current directory: /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/sassc-2.3.0/ext
/home/vagrant/.rbenv/versions/2.7.1/bin/ruby -I /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/2.7.0 -r ./siteconf20200422-11227-g7m1en.rb extconf.rb
creating Makefile
current directory: /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/sassc-2.3.0/ext
make "DESTDIR=" clean
current directory: /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/sassc-2.3.0/ext
make "DESTDIR="
compiling ./libsass/src/ast.cpp
cc1plus: error: unrecognized command line option "-std=c++11"
make: *** [ast.o] Error 1
make failed, exit code 2
Gem files will remain installed in /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/sassc-2.3.0 for inspection.
Results logged to /home/vagrant/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/extensions/x86_64-linux/2.7.0/sassc-2.3.0/gem_make.out
然后我做了“ $ rails server -b 192.168.33.10 -d”
但是
Could not find gem 'sqlite3 (~> 1.4.0)' in any of the gem sources listed in your Gemfile.
Run `bundle install` to install missing gems.
结果是相同的...
接下来我该怎么办？