有人能帮忙清除这个文件中的错误吗？
\documentclass[10pt,xcolor=svgnames]{beamer}
%\documentclass{article}
%usepackage[english]{babel}
\usepackage{fancyhdr}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usepackage{tcolorbox}
\usepackage{geometry}
%\usepackage{graphicx}
%\usepackage[svgnames]{xcolor}
\usepackage{amssymb}
\colorlet{white}{white}
\mode<presentation>
%
%
%\usetheme{Dresden}
%\usecolortheme{beaver}
%\setbeamercolor{itemize item}{fg=darkred!80!white}
%
%\usetheme{Singapore}
% \usetheme{Boadilla}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\usepackage{BeamerColor}
%\usetheme[]{Szeged}
%\The new themes are Warsaw, Boadilla, AnnArbor,Rochester,Antibes,JuanLesPins,Berlin,rounded,crane
%\usetheme[]{Szeged}
%\usetheme{Pittsburgh}
%\usetheme{CambridgeUS}
%\usetheme[hoptionsi]{Berkeley}
%\usecolortheme[]{wolverine}
%\usetheme[]{Berkeley}
%\usetheme{dresden}
%\usefonttheme{structureitalicserif}
\usetheme{Antibes}
%\usecolortheme{crane}
%\usetheme[]{}
%\usecolortheme[named=OliveGreen]{structure}
%\usecolortheme[named=Brown]{structure}
%\usecolortheme[named=OliveGreen]{structure}
%\usecolortheme{wolverine}
%\usecolortheme{oily}
%\setbeamerfont{}{size={50cm}}
\setbeamertemplate{enumerate items}[default]
\setbeamertemplate{theorems}[ams style]
\usepackage{ragged2e}\justifying
\usepackage{amsmath,amssymb,amsthm}
\usepackage{epsf}
%\usepackage{graphics}
%\usepackage{graphicx}
\usepackage{color}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{cor}[theorem]{Corollary}
\newtheorem{Algorithm}[theorem]{Algorithm}
\newcommand{\R}{\mathbb{R}}
\newtheorem{remark}[theorem]{Remark}
%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\Date}{3 october 2019}% change the date here
\newcommand{\companyName}{Company Name Here} % change company name here
\newcommand{\Speaker}{Speaker} %change speaker name with 'speaker'
\newcommand{\SpeakerTitle}{Speaker's Title} %change speaker title with "Speaker's Title"
\title[company name]
{\LARGE \textbf{company name}}
\subtitle{}
\author[ABCD]{\textcolor[rgb]{0.00,0.25,0.00}{ABCD}}
\institute[]
{\inst{}%
ABC Uni
}
%
\date[]{ }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\documentclass{beamer}
\useoutertheme{split}
\setbeamertemplate{headline}{}
\setbeamertemplate{footline}[page number]
\pagestyle{plain}
\thispagestyle{empty}
\setbeamertemplate{navigation symbols}{}
\usepackage{beamerthemeshadow}
\pagestyle{fancy}
\fancyhf{}
\rfoot{\thepage}
\begin{document}
%\begin{frame}
% \titlepage
%\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FRAME 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\bgroup
\usebackgroundtemplate{
\includegraphics[width=\paperwidth,height=\paperheight]{1.png}}
\begin{frame}
\tikz[remember picture, overlay] \fill[green] (current page.south west) rectangle ++(\paperwidth,0.27cm); %Draw green line at the bottom of the page
\vspace*{-0.5in} %adjust this if your logo is being cropped from top
\begin{flushleft}
{\includegraphics[width=5cm]{2.png}}
\vspace{-0.8cm}
\newgeometry{textwidth = 5cm} % change it if you change the width of the logo
\begin{flushright}
{\textcolor{white}{A tagline for the company spans}}\\
{\textcolor{white}{two lines just under the logo.}} \\
\end{flushright}
\vspace{-0.7cm}
\newgeometry{textwidth = 5cm} % change it if you change the width of the logo
\begin{flushright}
{\textcolor{white}{\Date}}
\end{flushright}
\end{flushleft}
\restoregeometry
%\textcolor{white}{\text{A tagline for the company \\
%spans two lines just under the logo}}
%\vfill
\begin{columns}%beamer
\column{0.45\textwidth}
% blank
\column{0.45\textwidth}
\begin{flushleft}
\begin{tcolorbox}[standard jigsaw, opacityback = 0, top =2cm, left = 0 cm, colframe=white, width = 4.5cm]
\textcolor{white}{\textbf{CLICK TO ADD TITLE}}
\end{tcolorbox}
\textcolor{white}{\Speaker, \SpeakerTitle}
\end{flushleft}
\end{columns}
%\section{1}
%\textcolor{white}{click to add title}
\end{frame}
%\egroup
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FRAME 3 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\tikz[remember picture, overlay] \fill[green] (current page.south west) rectangle ++(\paperwidth,0.27cm); %Draw green line at the bottom of the page
\section{Open Ball, Closed Ball, Sphere}\label{1114}
\begin{flushleft}
\vbox{
\begin{minipage}[t][0.0025\textheight][t]{\textwidth}
\tiny{\companyName $ |$ \Date}
\end{minipage}\\
\begin{minipage}[b][0.2\textheight][b]{0.95\textwidth}
\begin{tcolorbox}[standard jigsaw, opacityback = 0, top =0.5cm, bottom = 0.5cm, left = 0 cm, colframe=black]
\textbf{CLICK TO ADD TITLE} %Edit this if you just want to change the text, else if you want to remove complete box then delete the block of "tcolorbox" and start writting required text
\end{tcolorbox}
\end{minipage}\\
\begin{minipage}[t][0.5\textheight][t]{0.95\textwidth}
\begin{tcolorbox}[standard jigsaw, opacityback = 0, bottom =2in , left = 0 cm, colframe=black]
\textbf{CLICK TO ADD TITLE} %Edit this if you just want to change the text, else if you want to remove complete box then delete the block of "tcolorbox" and start writting required text
\end{tcolorbox}
\end{minipage}
\begin{picture}(25, 30)(-293, -215)
\includegraphics[scale=0.5]{3.png}
\end{picture}
}
\end{flushleft}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% FRAME 4 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\bgroup
\usebackgroundtemplate{%
\includegraphics[width=\paperwidth,height=\paperheight]{1.png}}
\begin{frame}
\tikz[remember picture, overlay] \fill[green] (current page.south west) rectangle ++(\paperwidth,0.27cm); %Draw green line at the bottom of the page
\vspace*{-1in} %adjust this if your logo is being cropped from top
\begin{flushleft}
{\includegraphics[width=5cm]{2.png}}
\vspace{-0.75cm}
\newgeometry{textwidth = 5cm} % change it if you change the width of the logo
\begin{flushright}
{\textcolor{white}{A tagline for the company spans}}\\
{\textcolor{white}{two lines just under the logo.}} \\
\end{flushright}
\vspace{-0.6cm}
\newgeometry{textwidth = 5cm} % change it if you change the width of the logo
\begin{flushright}
{\textcolor{white}{\Date}}
\end{flushright}
\end{flushleft}
\restoregeometry
%\textcolor{white}{\text{A tagline for the company \\
%spams two lines just under the logo}}
%\vfill
\begin{columns}%beamer
\column{0.45\textwidth}
% blank
\column{0.45\textwidth}
\begin{flushleft}
\vspace{0.9cm}
\textcolor{white}{\textbf{QUESTIONS?}}\\
\vspace{0.2cm}
\textcolor{white}{\Speaker, \SpeakerTitle}
\end{flushleft}
\end{columns}
% \section{1}
\thispagestyle{empty}
\end{frame}
%\egroup
\end{document}