input command yarn --version error

[lwbtt0915]

C:\zdjt\soft\Yarn>yarn --version
'C:\Program' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
Unrecognized option: --version
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

[lwbtt0915]

C:\zdjt\soft\Yarn>yarn --version
'C:\Program' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
Unrecognized option: --version
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

[probil]

Are you sure yarn is installed globally?

[PLQin]

Try these solutions: #601

[probil]

It seems like there is something called yarn written in Java (not JavaScript) installed on you machine