Errors are normal. Read the first one in the log, fix it and compile again, since later errors are often caused by the first.

When a compile fails, TeXposit lists the errors in the compilation log. Use Ask AI to fix on one error, or Ask AI to fix all, to hand it to the assistant.

Common errors

`! Missing $ inserted.`

Cause: a math symbol such as _, ^ or \alpha in normal text.

Fix: wrap it in dollar signs, for example $x_2$ . For a literal underscore, write \_.

`! Undefined control sequence.`

Cause: a typo in a command (for example \sectionn), or a command from a package you have not loaded.

Fix: check the spelling or add the missing \usepackage.

`Runaway argument?`

Cause: a missing closing brace }.

Fix: check that every opening brace has a match.

`\begin{...} ended by \end{...}`

Cause: an environment was opened with one name and closed with another.

Fix: make the \begin and \end names match.

Warnings

`Overfull \hbox (10.2pt too wide)`

Text sticks out into the margin, usually because of a long word or URL LaTeX cannot break. Rephrase, add a hyphenation hint with \-, or ignore it if the overflow is small.