Google App Engine部署失败，因为在工作区中找不到requirements.txt文件

是否有人收到“步骤＃1-“构建器”：IOError：[Errno 2]此类文件或目录：尝试部署时没有这样的文件或目录：“ /workspace/requirements.txt -t lib /'以安装这些依赖项\ r”'错误将python37应用添加到Google App Engine？

我正在尝试使用python 37标准运行时部署我的Web应用程序，并收到以下构建错误：

Step #1 - "builder": IOError: [Errno 2] No such file or directory: "/workspace/requirements.txt -t lib/' to install these dependencies\r"
Finished Step #1 - "builder"
ERROR

我已经仔细检查了requirements.txt文件与main.py脚本位于同一目录中，并且似乎根据日志中的内容在部署中读取了requirements.txt文件，但随后找不到工作区中的文件。

我正在从虚拟环境中进行部署，并确保在虚拟环境中运行“ pip install -r requirements.txt”命令，但是在部署时它在日志中仍会给出相同的错误。以下是app.yaml文件内容的副本和部分日志。

app.yaml文件

runtime: python37

instance_class: B8
basic_scaling:
   max_instances: 1
   idle_timeout: 1m

handlers:
 - url: /.*
   script: auto

日志：

Step #1 - "builder": # This requirements file lists all third-party 
dependencies for this project.
Step #1 - "builder": #
Step #1 - "builder": # Run 'pip install -r requirements.txt -t lib/' to     
install these dependencies
Step #1 - "builder": # in `lib/` subdirectory.
Step #1 - "builder": #
Step #1 - "builder": # Note: The `lib` directory is added to `sys.path` by `appengine_config.py`.
Step #1 - "builder": flask==1.0.2
Step #1 - "builder": flask-restful==0.3.6
Step #1 - "builder": firebase-admin==2.14.0
Step #1 - "builder": pandas==0.23.4
Step #1 - "builder": datetime==4.3
Step #1 - "builder": google.auth==1.6.2
Step #1 - "builder": google.cloud==0.34.0
Step #1 - "builder": google-cloud-pubsub==0.39.0
Step #1 - "builder": dfply==0.3.3
Step #1 - "builder": requests==2.21.0
Step #1 - "builder": gunicorn
Step #1 - "builder": 
Step #1 - "builder": INFO found recursive python requirements file: requirements.txt -t lib/' to install these dependencies
Step #1 - "builder": INFO checking_cached_requirements.txt_layer took 0 seconds
Step #1 - "builder": INFO build process for FTL image took 0 seconds
Step #1 - "builder": INFO full build took 0 seconds
Step #1 - "builder": Traceback (most recent call last):
Step #1 - "builder": File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
Step #1 - "builder": "__main__", fname, loader, pkg_name)
Step #1 - "builder": File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
Step #1 - "builder": exec code in run_globals
Step #1 - "builder": File "/ftl.par/__main__.py", line 65, in <module>
Step #1 - "builder": File "/ftl.par/__main__.py", line 54, in main
Step #1 - "builder": File "/ftl.par/__main__/ftl/python/builder.py", line 114, in Build
Step #1 - "builder": File "/ftl.par/__main__/ftl/python/layer_builder.py", line 116, in BuildLayer
Step #1 - "builder": File "/ftl.par/__main__/ftl/common/single_layer_image.py", line 60, in GetCacheKey
Step #1 - "builder": File "/ftl.par/__main__/ftl/python/layer_builder.py", line 107, in GetCacheKeyRaw
Step #1 - "builder": File "/ftl.par/__main__/ftl/common/ftl_util.py", line 168, in descriptor_parser
Step #1 - "builder": File "/ftl.par/__main__/ftl/common/context.py", line 80, in GetFile
Step #1 - "builder": IOError: [Errno 2] No such file or directory: "/workspace/requirements.txt -t lib/' to install these dependencies\r"
Finished Step #1 - "builder"
ERROR