Undefined index

On node page where is note

Notice: Undefined index: limit in Drupal\editor_note\EditorNoteHelperService->getNotesByEntityAndField() (line 142 of modules/editor_note/src/EditorNoteHelperService.php).

if add new

Drupal\Core\Entity\EntityStorageException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'entity_id' cannot be null: INSERT INTO {editor_note} (bundle, uuid, uid, entity_id, entity_type, revision_id, note__value, note__format, field_machine_name, created, changed) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9, :db_insert_placeholder_10); Array ( [:db_insert_placeholder_0] => forum [:db_insert_placeholder_1] => 16e011af-9547-47ff-988d-eaa4a783c88a [:db_insert_placeholder_2] => 3 [:db_insert_placeholder_3] => [:db_insert_placeholder_4] => node [:db_insert_placeholder_5] => 183 [:db_insert_placeholder_6] => VovaUly, 17.01.2020 [:db_insert_placeholder_7] => plain_text [:db_insert_placeholder_8] => field_editor_notes [:db_insert_placeholder_9] => 1582216809 [:db_insert_placeholder_10] => 1582216809 ) in Drupal\Core\Entity\Sql\SqlContentEntityStorage->save() (line 846 of core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php).

D:8.8; PHP:7.1
Development version: 8.x-1.x-dev updated 8 Feb 2020 also