I have this error and I cant fix it. 

Error: 
Odoo Server Error 

Traceback (most recent call last): 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 656, in _handle_exception 
return super(JsonRequest, self)._handle_exception(exception) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 314, in _handle_exception 
raise pycompat.reraise(type(exception), exception, sys.exc_info()[2]) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/tools/pycompat.py", line 87, in reraise 
raise value 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 698, in dispatch 
result = self._call_function(**self.params) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 346, in _call_function 
return checked_call(self.db, *args, **kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/service/model.py", line 97, in wrapper 
return f(dbname, *args, **kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 339, in checked_call 
result = self.endpoint(*a, **kw) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 941, in __call__ 
return self.method(*args, **kw) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/http.py", line 519, in response_wrap 
response = f(*args, **kw) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/addons/web/controllers/main.py", line 962, in call_kw 
return self._call_kw(model, method, args, kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/addons/web/controllers/main.py", line 954, in _call_kw 
return call_kw(request.env[model], method, args, kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/api.py", line 745, in call_kw 
return _call_kw_model(method, model, args, kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/api.py", line 718, in _call_kw_model 
result = method(recs, *args, **kwargs) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/models.py", line 1376, in load_views 
for [v_id, v_type] in views 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/models.py", line 1376, in <dictcomp> 
for [v_id, v_type] in views 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/addons/base/models/res_config.py", line 395, in fields_view_get 
toolbar=toolbar, submenu=submenu) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/models.py", line 1462, in fields_view_get 
xarch, xfields = View.postprocess_and_fields(self._name, etree.fromstring(result['arch']), view_id) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/addons/base/models/ir_ui_view.py", line 1096, in postprocess_and_fields 
self.raise_view_error(message, view_id) 
File "/opt/bitnami/apps/odoo/lib/odoo-12.0.post20190618-py3.7.egg/odoo/addons/base/models/ir_ui_view.py", line 548, in raise_view_error 
raise ValueError(message) 
ValueError: El campo `group_sale_order_template` no existe 

Contexto del error: 
Vista `n/a` 
[view_id: n/a, xml_id: n/a, model: n/a, parent_id: n/a]

Can someone help me? 

Thanks you.

Regards