fix: report ~ lead conversion time

[gavindsouza]

Traceback:

Traceback (most recent call last):
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/app.py", line 60, in application
    response = frappe.api.handle()
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/api.py", line 55, in handle
    return frappe.handler.handle()
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/handler.py", line 21, in handle
    data = execute_cmd(cmd)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/handler.py", line 56, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/__init__.py", line 1036, in call
    return fn(*args, **newargs)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/__init__.py", line 511, in wrapper_fn
    retval = fn(*args, **get_newargs(fn, kwargs))
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/desk/query_report.py", line 200, in run
    result = generate_report_result(report, filters, user)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/desk/query_report.py", line 75, in generate_report_result
    res = frappe.get_attr(method_name)(frappe._dict(filters))
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/erpnext/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py", line 12, in execute
    communication_list = get_communication_details(filters)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/erpnext/erpnext/crm/report/lead_conversion_time/lead_conversion_time.py", line 70, in get_communication_details
    ['name', 'customer_name', 'lead', 'contact_email'], as_dict=1)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/database/database.py", line 444, in get_values
    out = self._get_values_from_table(fields, filters, doctype, as_dict, debug, order_by, update)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/database/database.py", line 591, in _get_values_from_table
    as_dict=as_dict, debug=debug, update=update)
  File "/home/frappe/benches/bench-version-12-2019-09-24/apps/frappe/frappe/database/database.py", line 156, in sql
    self._cursor.execute(query, values)
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute
    result = self._query(query)
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query
    conn.query(q)
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result
    result.read()
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/connections.py", line 1075, in read
    first_packet = self.connection._read_packet()
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packet
    packet.check_error()
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "/home/frappe/benches/bench-version-12-2019-09-24/env/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.InternalError: (1054, "Unknown column 'lead' in 'field list'")