Unquoted HTML entity found SH-1109

There is an unquoted HTML entity, such as &, > or < (instead of &, > and <) in your code. It is recommended to replace HTML entities with their corresponding characters.

Problematic code:

foo && bar

Preferred code:

foo && bar

Exception:

If you want to run a command called amp after backgrounding another command, add a space: foo & amp;.