"LaTeX" writing a paper, the picture name is wrong caption error: Undefined control sequence

I. Introduction

Xiaobai, in the new LaTex template, I encountered the Undefined control sequence problem, which is located in the caption. The solution is as follows.

2. Cause

According to the prompts, it is because of lack of libraries.

3. Technical realization

Add library \usepackage{caption}

 

OK.