Composer \ Repository \ InvalidRepositoryException第1行的解析错误：

Question

I was doing composer update

vagrant@homestead:~/code/myproject$ composer update

and all of a sudden this came in red:

[Composer\Repository\InvalidRepositoryException]
Invalid repository data in /home/vagrant/code/myproject/vendor/composer/installed.json, packages could not be loaded: [Seld\JsonLint\
ParsingException] "/home/vagrant/code/myproject/vendor/composer/installed.json" does not contain valid JSON
Parse error on line 1:

^
Expected one of: 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '['

What should I do?