当我在heroku中部署我的应用程序时没有任何麻烦，但是当我尝试运行该应用程序时出现错误：
ModuleNotFoundError：没有名为“ keras”的模块
我使用pip，并且正在virtualenv中工作。
absl-py==0.7.0 asn1crypto==0.24.0 astor==0.7.1 attrs==18.2.0
backcall==0.1.0 bleach==3.1.0 certifi==2019.3.9 cffi==1.11.5
chardet==3.0.4 Click==7.0 cryptography==2.4.2 cycler==0.10.0
Cython==0.29.6 decorator==4.3.0 entrypoints==0.3
fix-yahoo-finance==0.0.22 Flask==1.0.2 Flask-WTF==0.14.2 gast==0.2.2
graphviz==0.10.1 grpcio==1.16.1 h5py==2.9.0 idna==2.8
ipykernel==5.1.0 ipython==7.4.0 ipython-genutils==0.2.0
ipywidgets==7.4.2 itsdangerous==1.1.0 jedi==0.13.2 Jinja2==2.10
jsonschema==3.0.0a3 jupyter==1.0.0 jupyter-client==5.2.4
jupyter-console==6.0.0 jupyter-contrib-core==0.3.3
jupyter-contrib-nbextensions==0.5.1 jupyter-core==4.4.0
jupyter-highlight-selected-word==0.2.0 jupyter-latex-envs==1.4.6
jupyter-nbextensions-configurator==0.4.1 jupyterlab==0.35.3
jupyterlab-server==0.2.0 Keras==2.1.6 Keras-Applications==1.0.6
Keras-Preprocessing==1.0.5 kiwisolver==1.0.1 lxml==4.3.0
Markdown==3.0.1 MarkupSafe==1.1.0 matplotlib==3.0.2 mistune==0.8.4
mkl-fft==1.0.10 mkl-random==1.0.2 multitasking==0.0.7
nbconvert==5.3.1 nbformat==4.4.0 notebook==5.7.4 numpy==1.15.4
pandas==0.23.4 pandas-datareader==0.7.0 pandocfilters==1.4.2
parso==0.3.1 patsy==0.5.1 pexpect==4.6.0 pickleshare==0.7.5
pipenv==2018.11.26 plotly==3.5.0 pmdarima==1.1.0
prometheus-client==0.5.0 prompt-toolkit==2.0.7 protobuf==3.6.1
ptyprocess==0.6.0 pycparser==2.19 Pygments==2.3.1 pyOpenSSL==18.0.0
pyparsing==2.3.1 pyrsistent==0.14.9 PySocks==1.6.8
python-dateutil==2.7.5 pytz==2018.9 PyYAML==3.13 pyzmq==17.1.2
qtconsole==4.4.3 requests==2.21.0 retrying==1.3.3
scikit-learn==0.19.2 scipy==1.1.0 seaborn==0.9.0 Send2Trash==1.5.0
simplejson==3.16.0 six==1.12.0 statsmodels==0.9.0 ta==0.3.8
tensorboard==1.12.2 tensorflow==1.12.0 termcolor==1.1.0
terminado==0.8.1 testpath==0.4.2 tornado==5.1.1 traitlets==4.3.2
urllib3==1.24.1 wcwidth==0.1.7 webencodings==0.5.1 Werkzeug==0.14.1
widgetsnbextension==3.4.2 wrapt==1.11.0 WTForms==2.2.1 xgboost==0.81
Heroku错误：ModuleNotFoundError：没有名为“ keras”的模块