Vagrantが立ち上がらなくなったのを解決

##概要
久々にVirtualBoxを立ち上げようとしたら立ち上がらなくなっていたので解決方法のメモ

##vagrant upでエラー

$ vagrant up
No usable default provider could be found for your system.

Vagrant relies on interactions with 3rd party systems, known as
"providers", to provide Vagrant with resources to run development
environments. Examples are VirtualBox, VMware, Hyper-V.

The easiest solution to this message is to install VirtualBox, which
is available for free on all major platforms.

If you believe you already have a provider available, make sure it
is properly installed and configured. You can see more details about
why a particular provider isn't working by forcing usage with
`vagrant up --provider=PROVIDER`, which should give you a more specific
error message for that particular provider.

#原因
以下によるとvagrantとvirtualboxのバージョンの組み合わせが悪いとエラーとなっている様子

vagrantとvirtualboxのバージョンの組み合わせの確認

#解決法
Vagrant(ver2.2.15)、virtualbox(ver5.2.34)へバージョンの調整で解決した（2021_04_19時点）
※virtualbox(5.2.34)は以下からダウンロード
Download_Old_Builds_5_2 – Oracle VM VirtualBox