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VirtualboxGuestAdditionのバージョンがホストとゲストで一致していない

2019/5/1

エラー内容

Vagrant was unable to mount VirtualBox shared folders. This is usually
because the filesystem "vboxsf" is not available. This filesystem is
made available via the VirtualBox Guest Additions and kernel module.
Please verify that these guest additions are properly installed in the
guest. This is not a bug in Vagrant and is usually caused by a faulty
Vagrant box. For context, the command attempted was:

mount -t vboxsf -o uid=1000,gid=1000 vagrant /vagrant

The error output from the command was:

/sbin/mount.vboxsf: mounting failed with the error: No such device

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Vagrant was unable to mount VirtualBox shared folders. This is usually

because the filesystem "vboxsf" is not available. This filesystem is

made available via the VirtualBox Guest Additions and kernel module.

Please verify that these guest additions are properly installed in the

guest. This is not a bug in Vagrant and is usually caused by a faulty

Vagrant box. For context, the command attempted was:

mount -t vboxsf -o uid=1000,gid=1000 vagrant /vagrant

The error output from the command was:

/sbin/mount.vboxsf: mounting failed with the error: No such device

VirtualboxGuestAdditionのバージョンがホストとゲストで一致していないことで、エラーになっている。 [ ...

ActiveRecord::PendingMigrationError

2019/4/13

マイグレーションエラーエラーが出たとき以下のコマンドを実行

$ rake db:migrate

1	$ rake db:migrate

あれ、またエラーでたｗ [crayon-6145220668d3048 ...

You must use Bundler 2 or greater with this lockfile

2019/4/13

railsの環境構築しているときに出たエラーエラー内容

/usr/local/rbenv/versions/2.4.1/lib/ruby/site_ruby/2.4.0/bundler/lockfile_parser.rb:108:in `warn_for_outdated_bundler_version': You must use Bundler 2 or greater with this lockfile. (Bundler::LockfileError)
	from /usr/local/rbenv/versions/2.4.1/lib/ruby/site_ruby/2.4.0/bundler/lockfile_parser.rb:95:in `initialize'
	from /var/www/html/propanet/bin/spring:10:in `new'
	from /var/www/html/propanet/bin/spring:10:in `&lt;top (required)>'
	from bin/rails:3:in `load'
	from bin/rails:3:in `&lt;main>'

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/usr/local/rbenv/versions/2.4.1/lib/ruby/site_ruby/2.4.0/bundler/lockfile_parser.rb:108:in `warn_for_outdated_bundler_version': You must use Bundler 2 or greater with this lockfile. (Bundler::LockfileError)

from /usr/local/rbenv/versions/2.4.1/lib/ruby/site_ruby/2.4.0/bundler/lockfile_parser.rb:95:in `initialize'

from /var/www/html/propanet/bin/spring:10:in `new'

from /var/www/html/propanet/bin/spring:10:in `<top (required)>'

from bin/rails:3:in `load'

from bin/rails:3:in `<main>'

どうやらプロジェクトのbundleとGemfileのbandleがあっていな ...