The main reason is that the PDF uses page numbers,
Add the below codes after \maketitle:

\pagestyle{empty}  % no page number for the second and the later pages
\thispagestyle{empty} % no page number for the first page

Done!

Read More:

• [Solved] error: ‘IEEE80211_BAND_2GHZ’ undeclared here (not in a function)
• IIS 404 The page cannot be displayed because an internal server error has occurred
• Nginx: How to Use Error_Page
• [Solved] Vscode error: Unable to resolve resource walkThrough://vscode_getting_started_page
• Sqoop Error: Can‘t parse input data: ‘\N‘ [How to Solve]
• [Solved] ERROR #8003 More than one page is numbered 1.
• [Solved] MindSpore Error: “RuntimeError: Invalid data, Page size.”
• Ajax prevents page requests from reporting errors
• [Solved] @webservice Error: org.apache.cxf.common.i18n.UncheckedException: No operation was found with
• The index.nvue page of uniapp reports an error about CSS
• The drone settings page is not trusted
• The page you are requesting cannot be served because of the extension configuration
• [Solved] sparkSQL Error: WARN TaskMemoryManager: Failed to allocate a page (bytes), try again.
• How to Solve Zeppelin page 503 error
• [Solved] An unexpected error has occurred. Conda has prepared the above report.
• How to Fix HTTP Error 500: the default page enter their own routing can’t find a result
• Win10 remote connection submits error by using cluster: Batch: error: batch script contains DOS line breaks (\R\n) sbatch: error
• [Solved] Swagger Error: Whitelabel Error Page status=405
• Python Importerror: DLL load failed: the page file is too small to complete the operation.
• Conda create New environment Error: An unexpected error has occurred. Conda has prepared the above report.