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ModuleNotFoundError: No module named 'xxxx' when install-app

I want to add custom app cheque_management from https://github.com/hfaridgit/Cheque-Management for my production erpnext

the apps already on home/frappe/frappe-bench/apps

cheque_management   erp next   frappe

and listed on frappe-bench/sites/apps.text

frappe
erpnext
cheque_management

but when I try bench --site mysite install-app cheque_management
I got

Traceback (most recent call last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 104, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 19, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 27, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 185, in install_app
    frappe.init(site=site)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 212, in init
    setup_module_map()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1140, in setup_module_map
    for module in get_module_list(app):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1008, in get_module_list
    return get_file_items(os.path.join(os.path.dirname(get_module(app_name).__file__), "modules.txt"))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 966, in get_module
    return importlib.import_module(modulename)
  File "/usr/local/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 984, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'cheque_management'
Traceback (most recent call last):
  File "/usr/local/bin/bench", line 17, in <module>
    subprocess.check_call(
  File "/usr/local/lib/python3.9/subprocess.py", line 373, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/home/frappe/frappe-bench/env/bin/python', '/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py', 'frappe', '--site', 'mysite', 'install-app', 'cheque_management']' returned non-zero exit status 1.

any clue how to fix this?