Errors
LaTeX error messages can sometimes be tricky to understand and fix. We've put together a list of common errors below, along with more information about what they mean and how to solve them.
Alignment
Double subscript
Missing Math mode characters
References
Labeling
Float specifiers
Undefined control sequences
File not found
- File XXX not found on input line XXX."
- LaTeX Error: File XXX not found."
- Package pdftex.def Error: File XXX not found."
Missing number/illegal units of measure
Environment undefined (missing package)
- LaTeX Error: Environment tikzpicture undefined
- LaTeX Error: Environment theorem undefined
- LaTeX Error: Environment split undefined
- LaTeX Error: Environment minipage* undefined
- LaTeX Error: Environment maplelatex undefined
- LaTeX Error: Environment mapleinput undefined
- LaTeX Error: Environment maplegroup undefined
- LaTeX Error: Environment flalign undefined
- LaTeX Error: Environment figure* undefined
- LaTeX Error: Environment comment undefined
- LaTeX Error: Environment biblio_lat undefined
- LaTeX Error: Environment align* undefined
- LaTeX Error: Environment align undefined
- LaTeX Error: Environment algorithm undefined
- LaTeX Error: Environment adjustbox undefined
Underfull and overfull boxes
Although these warnings are not errors we list them here for convenience: