latex: Command for 'latex' gave return code 1 Refer to 'slides.log' for details Latexmk: Use the -f option to force complete processing, unless error was exceeding maximum runs, or warnings treated as errors. === TeX engine is 'pdfTeX' Latexmk: Errors, so I did not complete making targets make: *** [Makefile:5: slides.pdf] Error 12 Cleaning up project directory and file based variables ERROR: Job failed: exit code 1