tikzmath: undefined control sequence \ifpgfmathfloatparseactive · Issue #516 · pgf-tikz/pgf · GitHub
lualatex throws "! Undefined control sequence. l.1 \documentclass" · Issue #99 · gallandarakhneorg/autolatex · GitHub
![document classes - Undefined Control sequence while using \chapter command - TeX - LaTeX Stack Exchange document classes - Undefined Control sequence while using \chapter command - TeX - LaTeX Stack Exchange](https://i.stack.imgur.com/AladT.png)
document classes - Undefined Control sequence while using \chapter command - TeX - LaTeX Stack Exchange
![errors - Apparent runaway argument that started with an attempted \begin{align*} environment in \documentclass{amsart} - TeX - LaTeX Stack Exchange errors - Apparent runaway argument that started with an attempted \begin{align*} environment in \documentclass{amsart} - TeX - LaTeX Stack Exchange](https://i.stack.imgur.com/soGwe.png)
errors - Apparent runaway argument that started with an attempted \begin{align*} environment in \documentclass{amsart} - TeX - LaTeX Stack Exchange
Undefined control sequence. l.13 \documentclass [localFont,alternative]{yaac-another-awesome-cv} · Issue #51 · darwiin/yaac-another-awesome-cv · GitHub
![pdf - pdftex with error 3.1415 ... cannot work after update with windows 10 and 11 - TeX - LaTeX Stack Exchange pdf - pdftex with error 3.1415 ... cannot work after update with windows 10 and 11 - TeX - LaTeX Stack Exchange](https://i.stack.imgur.com/BolFu.png)