我正在尝试将我的 LaTeX 文件上传到 arXiv 以供提交。不幸的是，我收到了此错误。
Transcript written on research.log.
[verbose]: pdflatex 'research.tex' failed.
[verbose]: Removing (La)TeX AUX file called 'research.aux' (1599046895 >= 1599046895)
[verbose]: 'htex' is not a valid TeX format; will ignore.
[verbose]: TEXMFCNF is unset.
[verbose]: ~~~~~~~~~~~ Running htex for the first time ~~~~~~~~
[verbose]: Running: "(export HOME=/tmp PATH=/texlive/2016/bin/arch:/bin; cd /submissions/3350246/ && tex 'research.tex' < /dev/null)" 2>&1
[verbose]: This is TeX, Version 3.14159265 (TeX Live 2016) (preloaded format=tex)
(./research.tex
! Undefined control sequence.
l.1 \documentclass
[]{article}
?
! Emergency stop.
l.1 \documentclass
[]{article}
No pages of output.
Transcript written on research.log.
[verbose]: tex 'research.tex' failed.
[verbose]: TEXMFCNF is unset.
[verbose]: ~~~~~~~~~~~ Running tex for the first time ~~~~~~~~
[verbose]: Running: "(export HOME=/tmp PATH=/texlive/2016/bin/arch:/bin; cd /submissions/3350246/ && tex 'research.tex' < /dev/null)" 2>&1
[verbose]: This is TeX, Version 3.14159265 (TeX Live 2016) (preloaded format=tex)
(./research.tex
! Undefined control sequence.
l.1 \documentclass
[]{article}
?
! Emergency stop.
l.1 \documentclass
[]{article}
No pages of output.
Transcript written on research.log.
[verbose]: tex 'research.tex' failed.
[verbose]: We failed utterly to process the TeX file 'research.tex'
[error]: Unable to sucessfully process tex files.
*** AutoTeX ABORTING ***
[verbose]: AutoTeX returned error: Unable to sucessfully process tex files.
[verbose]: $autotex->process failed $@: $?: 0 $!: Inappropriate ioctl for device
[verbose]: Error running AutoTeX process:
我的 LaTeX 的序言如下：
\documentclass[]{article}
\date{}
\usepackage{cite}
\pdfoutput=1
\usepackage{amsmath, amssymb, float}
\usepackage{graphicx}
\usepackage[total={6.5in, 8in}]{geometry}
\renewcommand{\theequation}{\thesection.\arabic{equation}}
\usepackage{abstract}
\usepackage[affil-it]{authblk}
\usepackage[english]{babel}
\usepackage{blindtext}
\title{}
\author[1,*]{Devanshu Shekhar}
\author[2]{Satyananda Panda}
\affil[1]{Department of Physics, National Institute of Technology Calicut, Kerala, India}
\affil[2]{Department of Mathematics, National Institute of Technology Calicut, Kerala, India}
\affil[*]{Corresponding author: Devanshu Shekhar, [email protected]}
\begin{document}
我找不到出路！