Thanks.

I changed my code using session.send_request() not using requests.post() .
session = clearml.backend_api.Session() payload = { 'only_fields' : ["id", "name", "project", "completed", "user"], 'page' : 0, 'page_size' : 5, 'scroll_id' : 1, 'order_by' : [ 'completed' ] } response = session.send_request("tasks", "get_all", json=payload) response.json()but still I got same error.
{'meta': {'id': 'ede50394c3554b94a2726630a5c40d0b', 'trx': 'ede50394c3554b94a2726630a5c40d0b', 'endpoint': {'name': 'tasks.get_all', 'requested_version': '2.18', 'actual_version': '1.0'}, 'result_code': 400, 'result_subcode': 12, 'result_msg': 'Validation error (Integer size parameter greater than 1 should be provided when working with scroll)', 'error_stack': None, 'error_data': {}}, 'data': {}}

and I also tried APIClient
from clearml.backend_api.session.client import APIClient client = APIClient() tasks = client.tasks.get_all(page=0,page_size=10) tasksit gives following response and it works.
{'id': 'e8e09741583b4a0499baf588eb3f8bdb', 'name': '2D plots reporting'} {'id': 'b18427cc76e34c19aa475acef1ff8bfa', 'name': '3D plot reporting'} {'id': 'd0bf83f3a7854c4585e0db19d891a4cf', 'name': 'Abseil example'} {'id': '8dc205923f3d4674ad40482391454f8e', 'name': 'Automatic Hyper-Parameter Optimization'} {'id': '9751c847f6664f52a096e1264b258fad', 'name': 'Example Dataset'} {'id': '2a619936b4204f5ebfeefefd66bddf03', 'name': 'Example data'} {'id': '6008e7fbd2594037b2bb4d4aec6c3bf7', 'name': 'Export models to Artifacts'} {'id': '33534ab12ea646a3bab6326a5efbc261', 'name': 'Keras HP optimization base'} {'id': 'cc65eb033cce43b3a20e2174d1dbe686', 'name': 'Keras HP optimization base: General/batch_size=128 General/epochs=30 General/layer_1=128 General/layer_2=128'} {'id': 'd8efdaef91814392995157fcc0a56cf0', 'name': 'Keras HP optimization base: General/batch_size=128 General/epochs=30 General/layer_1=128 General/layer_2=384'}
when i call with scroll_id, and then the error occurred with unsupported arguments scroll_id.
from clearml.backend_api.session.client import APIClient client = APIClient() tasks = client.tasks.get_all(page=0,page_size=10, scroll_id=1) tasks
` ---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
Cell In [47], line 3
1 from clearml.backend_api.session.client import APIClient
2 client = APIClient()
----> 3 tasks = client.tasks.get_all(page=0,page_size=10, scroll_id=1)
4 tasks

File .venv\lib\site-packages\clearml\backend_api\session\client\client.py:422, in make_action.<locals>.get(self, *args, **kwargs)
417 @wrap
418 def get(self, *args, **kwargs):
419 return TableResponse(
420 service=self,
421 entity=entity,
--> 422 result=self.session.send(request_cls(*args, **kwargs)),
423 dest=dest,
424 fields=kwargs.pop("only_fields", None),
425 )

File .venv\lib\site-packages\clearml\backend_api\services\v2_13\tasks.py:7617, in GetAllRequest.init(self, id, name, user, project, page, page_size, order_by, type, tags, system_tags, status, only_fields, parent, status_changed, search_text, all, any, **kwargs)
7596 def init(
7597 self,
7598 id=None,
(...)
7615 **kwargs
...
---> 24 raise ValueError('Unsupported keyword arguments: %s' % ', '.join(kwargs.keys()))
25 elif allow_extra_fields and kwargs:
26 self._extra_fields = kwargs

ValueError: Unsupported keyword arguments: scroll_id `