AttributeError: type object pandas._TSObject has no attribute __reduce_cython__
#### Problem description

**First**
With pandas(0.23.4) imported, I use pyinstaller 3.3.1 to package my program, when open the .exe program, it reminded me error message as bellow and self-closing then.
`"   File "pandas\_libs\tslibs\conversion.pyx", line 222, in  init pandas._libs.tslibs.conversion
AttributeError: type object pandas._TSObject has no attribute __reduce_cython__"`

**Second**
When i changed the pandas(0.23.4) to pandas(0.20.3), the issue can be **solved**, but i prefer to the new features of pandas's new version, so how can i solve this issue with pandas(0.23.4)?  Waiting for your reply, thanks!

#### Expected Output

#### Output of ``pd.show_versions()``

<details>

INSTALLED VERSIONS
------------------
commit: None
python: 3.6.5.final.0
python-bits: 32
OS: Windows
OS-release: 7
machine: AMD64
processor: Intel64 Family 6 Model 142 Stepping 9, GenuineIntel
byteorder: little
LC_ALL: None
LANG: None
LOCALE: None.None
pandas: 0.23.4
pytest: None
pip: 18.0
setuptools: 28.8.0
Cython: 0.28.5
numpy: 1.15.0
scipy: 1.1.0
pyarrow: None
xarray: None
IPython: None
sphinx: None
patsy: None
dateutil: 2.7.3
pytz: 2018.4
blosc: None
bottleneck: None
tables: None
numexpr: None
feather: None
matplotlib: 2.2.2
openpyxl: 2.5.3
xlrd: 1.1.0
xlwt: None
xlsxwriter: None
lxml: None
bs4: None
html5lib: None
sqlalchemy: None
pymysql: None
psycopg2: None
jinja2: 2.10
s3fs: None
fastparquet: None
pandas_gbq: None
pandas_datareader: None

</details>
