[CC and Milestones, error code 110-578ef827] Stuck On Loading Screen Sims 4

hey here it is. Just letting you know that i had to taskmanager force close the game because I got to an endless loading screen.

<?xml version="1.0" ?><root>
<report><version>2</version><sessionid>dd28422ffef27ec46853d759</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-06-19 11:27:02</createtime><buildsignature>Local.Unknown.Unknown.1.115.253.1020-1.300.000.212.Release</buildsignature><categoryid>developmental_milestone_tracker.py:1111</categoryid><desyncid>dd28422ffef27ec46853d759</desyncid><systemconfig/><screenshot/><desyncdata>Exception raised while processing zone spin up sequence: 'Object not found: 0x858cd2f3' (KeyError: 'Object not found: 0x858cd2f3')&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Core\sims4\utils.py", line 179, in wrapper&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 222, in c_api_server_tick&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 511, in update&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1757, in update&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1389, in on_update&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 740, in on_hit_their_marks&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 1141, in _set_zone_state&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Core\sims4\callback_utils.py", line 158, in __call__&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\developmental_milestones\developmental_milestone_tracker.py", line 1203, in send_all_milestones_update_to_client&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\developmental_milestones\developmental_milestone_tracker.py", line 1111, in _get_milestone_update_msg&#13;&#10;KeyError: 'Object not found: 0x858cd2f3'rtim=0&#13;&#10;Client Session Time: 28.89&#13; &#10;Num Save Errors: 0&#13; &#10;Num Load Errors: 0&#13; &#10;Current Game State: 0x96d01090&#13; &#10;LoadingScreenActiveFlag: 1&#13; &#10;Origin Version: 13,482,0,5995&#13; &#10;Modded: False&#13; &#10;SystemInfo: Windows 11 10.0.22631 GPU: AMD Radeon(TM) Graphics  32.0.11020.10002, GUID: 47538BDC-93AE-11EE-9E07-A6F14A977E80&#13; &#10;</desyncdata></report>
</root>