Ruby on rails Taps服务器：：SQLite3：：CantOpenException:无法打开数据库文件

在heroku db:pull从宝石中移除后，我尝试使用水龙头

 taps server mysql2://root@localhost/trappor2 taps taps123

C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/adapters/sqlite.rb:
62:in `initialize': SQLite3::CantOpenException: unable to open database file (Se
quel::DatabaseConnectionError)
        from C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/adapte
rs/sqlite.rb:62:in `new'
        from C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/adapte
rs/sqlite.rb:62:in `connect'
        from C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/databa
se/misc.rb:45:in `block in initialize'
        from C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/connec
tion_pool.rb:92:in `call'
        from C:/Ruby193/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/connec
tion_pool.rb:92:in `make_new'

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是什么导致了这个错误

我最近也遇到了一些问题。如果可以，尝试切换到PG备份--这非常简单：