There are a number of possible causes of this error:
- Paragraph breaks are not permitted in the
arguments of short commands.
If there is a corresponding environment then you
should use that instead. For example, this error message will be
generated by doing, say,
This is a simple document.
Here is the first paragraph.✔
Here is the second paragraph.
- The closing brace of a
mandatory argument is missing:
This error will be caused by, say,
- This error can also be caused by omitting the
mandatory argument of an environment. For example,
this error will occur
if you do, say,
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