错误登台应用程序：Buildpack编译阶段中的应用登台失败

Question

我无法在cloud Foundry上部署symfony4项目。

我使用了manifet.yml文件

applications:
 - name: mysymfonyapi
   memory: 512M
   instances: 1
   buildpack: php_buildpack_modsec

运行cf push命令后出现此错误：

Loading composer repositories with package information
   Installing dependencies from lock file
   Package operations: 0 installs, 0 updates, 2 removals
     - Removing symfony/web-server-bundle (v4.2.4)
     - Removing symfony/process (v4.2.4)
   Generating autoload files
   Executing script cache:clear [KO]
    [KO]
   Script cache:clear returned with error code 1
   !!  Could not open input file: ./bin/console
   !!
   Script @auto-scripts was called via post-install-cmd
   -----> Composer command failed
   Traceback (most recent call last):
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/scripts/compile.py", line 61, in <module>
       .from_build_pack('lib/additional_commands')
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/lib/build_pack_utils/builder.py", line 209, in extensions
       process_extension(path, ctx, 'compile', process, args=[self])
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/lib/build_pack_utils/utils.py", line 69, in process_extension
       success(getattr(extn, to_call)(*args))
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/extensions/composer/extension.py", line 443, in compile
       return composer.compile(install)
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/lib/extension_helpers.py", line 154, in compile
       self._compile(install)
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/extensions/composer/extension.py", line 196, in _compile
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/extensions/composer/extension.py", line 343, in run
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/extensions/composer/extension.py", line 389, in run
     File "/tmp/buildpacks/9eb83110b979d1de7b0fd5b3abdfc92f/lib/build_pack_utils/runner.py", line 109, in stream_output
       raise CalledProcessError(retcode, cmd)
       self.run()
       *self._ctx['COMPOSER_INSTALL_OPTIONS'])
       shell=True)
   build_pack_utils.runner.CalledProcessError: Command '<open file '<fdopen>', mode 'w' at 0x7fb92ea299c0>' returned non-zero exit status 1
   Failed to compile droplet

我被困了好几天，请你帮忙。