Error:
Odoo Server Error

Traceback (most recent call last):
  File "/data/build/odoo/odoo/http.py", line 677, in dispatch
    result = self._call_function(**self.params)
  File "/data/build/odoo/odoo/http.py", line 353, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/data/build/odoo/odoo/service/model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "/data/build/odoo/odoo/http.py", line 346, in checked_call
    result = self.endpoint(*a, **kw)
  File "/data/build/odoo/odoo/http.py", line 922, in __call__
    return self.method(*args, **kw)
  File "/data/build/odoo/odoo/http.py", line 523, in response_wrap
    response = f(*args, **kw)
  File "/data/build/odoo/addons/web/controllers/main.py", line 1318, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/data/build/odoo/addons/web/controllers/main.py", line 1306, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/data/build/odoo/odoo/api.py", line 395, in call_kw
    model.flush()
  File "/data/build/odoo/odoo/models.py", line 5430, in flush
    self.recompute()
  File "/data/build/odoo/odoo/models.py", line 5832, in recompute
    process(next(iter(fields_to_compute)))
  File "/data/build/odoo/odoo/models.py", line 5815, in process
    recs.mapped(field.name)
  File "/data/build/odoo/odoo/models.py", line 5245, in mapped
    recs = recs._fields[name].mapped(recs)
  File "/data/build/odoo/odoo/fields.py", line 1040, in mapped
    self.__get__(record, type(records))
  File "/data/build/odoo/odoo/fields.py", line 961, in __get__
    self.compute_value(recs)
  File "/data/build/odoo/odoo/fields.py", line 1107, in compute_value
    records._compute_field_value(self)
  File "/data/build/odoo/odoo/models.py", line 3920, in _compute_field_value
    getattr(self, field.compute)()
  File "/data/build/odoo/addons/sale_margin/models/sale_order.py", line 61, in _compute_margin
    order.margin = sum(order.order_line.mapped('margin'))
  File "/data/build/odoo/odoo/models.py", line 5245, in mapped
    recs = recs._fields[name].mapped(recs)
  File "/data/build/odoo/odoo/fields.py", line 1040, in mapped
    self.__get__(record, type(records))
  File "/data/build/odoo/odoo/fields.py", line 961, in __get__
    self.compute_value(recs)
  File "/data/build/odoo/odoo/fields.py", line 1107, in compute_value
    records._compute_field_value(self)
  File "/data/build/odoo/odoo/models.py", line 3920, in _compute_field_value
    getattr(self, field.compute)()
  File "/data/build/odoo/addons/sale_margin/models/sale_order.py", line 48, in _compute_margin
    line.margin = line.price_subtotal - (line.purchase_price * line.product_uom_qty)
  File "/data/build/odoo/odoo/fields.py", line 961, in __get__
    self.compute_value(recs)
  File "/data/build/odoo/odoo/fields.py", line 1107, in compute_value
    records._compute_field_value(self)
  File "/data/build/odoo/odoo/models.py", line 3920, in _compute_field_value
    getattr(self, field.compute)()
  File "/data/build/odoo/addons/sale_stock_margin/models/sale_order_line.py", line 17, in _compute_purchase_price
    line.purchase_price = line.product_id._compute_average_price(0, line.product_uom_qty, line.move_ids)
  File "/data/build/odoo/addons/stock_account/models/product.py", line 633, in _compute_average_price
    return tmp_value / qty_to_invoice
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/data/build/odoo/odoo/http.py", line 632, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/data/build/odoo/odoo/http.py", line 317, in _handle_exception
    raise exception.with_traceback(None) from new_cause
ZeroDivisionError: float division by zero