Not able to mark email as read

When I try to mark an email as read I get the following error:

image

the error looks like this:

App Versions

{
	"banking": "15.1.0",
	"builder": "1.0.0-dev",
	"erpnext": "16.0.0-dev",
	"frappe": "16.0.0-dev",
	"gameplan": "0.0.1",
	"lms": "1.0.0",
	"print_designer": "1.3.3",
	"raven": "1.4.4",
	"tldraw_whiteboard": "0.0.1",
	"wiki": "2.0.0"
}

Route

Form/Communication/88abe3215d

Traceback

Traceback (most recent call last):
  File "apps/frappe/frappe/app.py", line 110, in application
    response = frappe.api.handle(request)
  File "apps/frappe/frappe/api/__init__.py", line 49, in handle
    data = endpoint(**arguments)
  File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
    return frappe.handler.handle()
  File "apps/frappe/frappe/handler.py", line 49, in handle
    data = execute_cmd(cmd)
  File "apps/frappe/frappe/handler.py", line 85, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "apps/frappe/frappe/__init__.py", line 1795, in call
    return fn(*args, **newargs)
  File "apps/frappe/frappe/utils/typing_validations.py", line 31, in wrapper
    return func(*args, **kwargs)
  File "apps/frappe/frappe/email/inbox.py", line 57, in create_email_flag_queue
    uid, seen_status, email_account = frappe.db.get_value(
  File "apps/frappe/frappe/database/database.py", line 509, in get_value
    result = self.get_values(
  File "apps/frappe/frappe/database/database.py", line 613, in get_values
    out = self._get_values_from_table(
  File "apps/frappe/frappe/database/database.py", line 871, in _get_values_from_table
    query = frappe.qb.get_query(
  File "apps/frappe/frappe/query_builder/utils.py", line 58, in get_query
    return Engine().get_query(*args, **kwargs)
  File "apps/frappe/frappe/database/query.py", line 73, in get_query
    self.apply_fields(fields)
  File "apps/frappe/frappe/database/query.py", line 101, in apply_fields
    self.fields = self.parse_fields(fields)
  File "apps/frappe/frappe/database/query.py", line 335, in parse_fields
    _fields.append(parse_field(_field))
  File "apps/frappe/frappe/database/query.py", line 316, in parse_field
    return self.get_function_object(field)
  File "apps/frappe/frappe/database/query.py", line 236, in get_function_object
    if _operator in initial_fields:
TypeError: argument of type 'int' is not iterable

Request Data

{
	"type": "POST",
	"args": {
		"names": "[\"88abe3215d\"]",
		"action": "Read",
		"flag": "(\\SEEN)"
	},
	"freeze": true,
	"headers": {},
	"error_handlers": {},
	"url": "/api/method/frappe.email.inbox.create_email_flag_queue",
	"request_id": null
}

Response Data

{
	"exception": "TypeError: argument of type 'int' is not iterable",
	"exc_type": "TypeError"
}

any idea what causes this issue?