smile_check_list: can't create Tasks (11.0)

[Linekio]

Hi, I just installed smile_check_list and try to configure one. When I try to add a task, the fields "Apply on" and "Complete if" are in readonly mode so I can't modify them even I selected a model. And when I save, I got an error:

Error:
Odoo Server Error

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 650, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 692, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 342, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 335, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 936, in __call__
    return self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 934, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/benoit/Bureau/acft_modules/smile_checklist/models/checklist.py", line 225, in write
    do_not_compute_progress_rates=True)).write(vals)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3089, in write
    self._write(old_vals)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3227, in _write
    field.write(self.with_context(rel_context), vals[name])
  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 2260, in write
    comodel.create(act[2])
  File "/home/benoit/Bureau/acft_modules/smile_checklist/models/checklist_task.py", line 29, in create
    task._manage_task_instances()
  File "/home/benoit/Bureau/acft_modules/smile_checklist/models/checklist_task.py", line 71, in _manage_task_instances
    checklist._update_models()
  File "<decorator-gen-130>", line 2, in _update_models
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 369, in loop
    result = [method(rec, *args, **kwargs) for rec in self]
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 369, in <listcomp>
    result = [method(rec, *args, **kwargs) for rec in self]
  File "/home/benoit/Bureau/acft_modules/smile_checklist/models/checklist.py", line 273, in _update_models
    Field.create(vals)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_model.py", line 648, in create
    self.pool.init_models(self._cr, models, dict(self._context, update_custom_fields=True))
  File "/usr/lib/python3/dist-packages/odoo/modules/registry.py", line 314, in init_models
    models[0].recompute()
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 4898, in recompute
    fs = self.env[field.model_name]._field_computed[field]
KeyError: mail.template.model