Failed to install custom Application after upgrade v11

Frappe Framework Bug
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1

Hello.

I have a custom application that has been worked on v9 and v10. Now after I have upgraded my ERPNEXT version to v11, this application has initiated an error and I can’t upgrade or install it newly created sites.

I have a trace about the error.
Please let me know, where to start to debug.

I see that the problem is a tab or a space key, but I doesnt have any in my code.

The trace is:

Installing topservice_modul...
Updating DocTypes for topservice_modul: [=======================                 ]Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 97, in 
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 25, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 168, in install_app
    _install_app(app, verbose=context.verbose)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/installer.py", line 145, in install_app
    sync_for(name, force=True, sync_everything=True, verbose=verbose, reset_permissions=True)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/sync.py", line 56, in sync_for
    reset_permissions=reset_permissions, for_sync=True)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 65, in import_file_by_path
    ignore_version=ignore_version, reset_permissions=reset_permissions)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/import_file.py", line 132, in import_doc
    doc.insert()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 249, in insert
    self.run_post_save_methods()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 905, in run_post_save_methods
    self.run_method("on_update")
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 772, in run_method
    out = Document.hook(fn)(self, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 1048, in composer
    return composed(self, method, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 1031, in runner
    add_to_return_value(self, fn(self, *args, **kwargs))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 766, in 
    fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/doctype/doctype.py", line 260, in on_update
    self.run_module_method("on_doctype_update")
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/doctype/doctype.py", line 325, in run_module_method
    module = load_doctype_module(self.name, self.module)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/utils.py", line 190, in load_doctype_module
    doctype_python_modules[key] = frappe.get_module(module_name)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 804, in get_module
    return importlib.import_module(modulename)
  File "/home/frappe/frappe-bench/env/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "", line 994, in _gcd_import
  File "", line 971, in _find_and_load
  File "", line 955, in _find_and_load_unlocked
  File "", line 665, in _load_unlocked
  File "", line 674, in exec_module
  File "", line 781, in get_code
  File "", line 741, in source_to_code
  File "", line 219, in _call_with_frames_removed
  File "/home/frappe/frappe-bench/apps/topservice_modul/topservice_modul/topservice/doctype/motor_dissamble_report/motor_dissamble_report.py", line 16
    doc.motor_dissamble_report = self.name
                                         ^
TabError: inconsistent use of tabs and spaces in indentation


Failed!
2

There’s a mix of tabs and spaces in your code and Python 3 doesn’t accept that.

Convert all your python files to Python 3 using the 2to3 command and convert all whitespace in code to either tabs or spaces but not a mix.

Also look out for 2to3 converting frappe.msgprint and throw commands to a wrong syntax. Check for any irregular changes made to frappe syntax.

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