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I want to compile LaTeX reports successfully ...

There is a LaTeX issue at the university and I want to create it, but it is a compile error from the first line. Perhaps it is related to the environment setting, but I have no idea what it is. Please give me advice.

Error message

Applicable source code
\ documentclass [11pt, twocolumn] {jarticle}
\ Title {What is sleep?}
\ Author {***}
\ Date {\ today}
\ Begin {document}
\ Maketitle
\ Section {Introduction}
\ Section {Conclusion}
\ End {document}

If i search for an error location, the first \ docu will turn blue.

Supplemental information

↓ We built the environment according to the procedure on this site.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwjCmYfo0InmAhWC-mEKHYBTAIcQFjAAegQIARAB&url=https%3A%2F%2Fprog-masaki.com%2Finstall-lateg0Vvco_vvvvvvcov 4e