Image of ShareLaTeX window. This is similar to the previous ShareLaTeX image but there is a small image of a red box with a white cross next to the line number 16 and a tooltip with "Undefined control sequence" written on it. The right hand preview panel now has a with pink background that has the error message details.
Undefined control sequence. main.tex, line 16
1.16 ...xample document. Modified: \pdcreationdate

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

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