我无法打开数据库文件 BibTeX

Question

我在论文中插入新参考文献时遇到了问题，因此我尝试隔离该问题，但最终却出现了这个奇怪的错误。

This is BibTeX, Version 0.99d (TeX Live 2016)
The top-level auxiliary file: test.aux
The style file: plainnat.bst
I couldn't open database file mybiblio2.bib
---line 5 of file test.aux
 : \bibdata{mybiblio2
 :                   }
I'm skipping whatever remains of this command
I found no database files---while reading file test.aux
Warning--I didn't find a database entry for "theJackson"
Warning--I didn't find a database entry for "CCCB"
(There were 2 error messages)

我的乳胶文件是测试.tex：

\documentclass{article}     % use "amsart" instead of "article" for AMSLaTeX format
\usepackage{geometry}                       % See geometry.pdf to learn the layout options. There are lots.
\usepackage{amsmath}
\geometry{letterpaper}                          % ... or a4paper or a5paper or ... 
\usepackage[parfill]{parskip}           % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}               % Use pdf, png, jpg, or eps§ with pdflatex; use eps in DVI mode
\usepackage{rotating}
\usepackage{booktabs}                               

\usepackage{natbib}
\bibliographystyle{plainnat}
\usepackage{amssymb}
\usepackage[hyphens,spaces]{url}

\usepackage[T1]{fontenc}
\usepackage{caption} 
\captionsetup[table]{skip=15pt} 

\title{Notes}
\author{Gabriele Brambilla}
\begin{document}
\maketitle
\section{Try}
bbaucmn  \cite{theJackson}\newline
cnnjfbkjeb \cite{CCCB}

\bibliography{mybiblio2}

\end{document}  

我的 bibtex 文件我的书目2.bib

@BOOK{Jackson,
   author = {{Jackson}, J.~D.},
    title = "{Classical Electrodynamics, 3rd Edition}",
booktitle = {Classical Electrodynamics, 3rd Edition, by John David Jackson, pp.~832.~ISBN 0-471-30932-X.~Wiley-VCH , July 1998.},
     year = 1998,
    month = jul,
   adsurl = {http://adsabs.harvard.edu/abs/1998clel.book.....J},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@BOOK{CCCB,
   author = {{Clarke}, C. and {Carswell}, B.},
    title = "{Principles of Astrophysical Fluid Dynamics}",
booktitle = {Principles of Astrophysical Fluid Dynamics, by Cathie Clarke , Bob Carswell, Cambridge, UK: Cambridge University Press, 2007},
     year = 2007,
    month = mar,
   adsurl = {http://adsabs.harvard.edu/abs/2007pafd.book.....C},
  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

你知道问题出在哪里吗？几天前，原始文件运行正常！我正在使用 TexShop。