How can I interpret the last exception file?

Today I started getting this LE every time a sim tries for baby. I've tried removing my mods folder, deleting cache files, etc. Vanilla game has no issues, but even with just MC Command Center I still get this LE. I even re-downloaded MC Command Center and it didn't work. Suggestions?



2aa7a7fa01f4cac8d5c19a31bdesyncea.maxis.sims4_64.15.pc2018-12-18 19:49:21Local.Unknown.Unknown.1.48.90.1020-1.200.000.377.Releaseinteraction.py:2910aa7a7fa01f4cac8d5c19a31bException in Sim Timeline: Exception running Element (TypeError: int() argument must be a string, a bytes-like object or a number, not 'ImmutableSlots') Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Server\scheduling.py", line 212, in simulate File "T:\InGame\Gameplay\Scripts\Server\elements.py", line 335, in _run File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\outcome.py", line 141, in on_loot File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 95, in apply_operations File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 373, in apply_to_resolver File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 358, in get_loot_ops_gen File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot_basic_op.py", line 155, in test_resolver File "T:\InGame\Gameplay\Scripts\Server\event_testing\tests.py", line 395, in run_tests File "T:\InGame\Gameplay\Scripts\Server\event_testing\resolver.py", line 122, in __call__ File "T:\InGame\Gameplay\Scripts\Server\event_testing\resolver.py", line 425, in get_participants File "T:\InGame\Gameplay\Scripts\Server\interactions\base\interaction.py", line 2910, in get_participants TypeError: int() argument must be a string, a bytes-like object or a number, not 'ImmutableSlots' rtim=0
2aa7a7fa01f4cac8d5c19a31bdesyncea.maxis.sims4_64.15.pc2018-12-18 19:55:52Local.Unknown.Unknown.1.48.90.1020-1.200.000.377.Releaseinteraction.py:2910aa7a7fa01f4cac8d5c19a31bException in Sim Timeline: Exception running Element (TypeError: int() argument must be a string, a bytes-like object or a number, not 'ImmutableSlots') Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Server\scheduling.py", line 212, in simulate File "T:\InGame\Gameplay\Scripts\Server\elements.py", line 335, in _run File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\outcome.py", line 141, in on_loot File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 95, in apply_operations File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 373, in apply_to_resolver File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot.py", line 358, in get_loot_ops_gen File "T:\InGame\Gameplay\Scripts\Server\interactions\utils\loot_basic_op.py", line 155, in test_resolver File "T:\InGame\Gameplay\Scripts\Server\event_testing\tests.py", line 395, in run_tests File "T:\InGame\Gameplay\Scripts\Server\event_testing\resolver.py", line 122, in __call__ File "T:\InGame\Gameplay\Scripts\Server\event_testing\resolver.py", line 425, in get_participants File "T:\InGame\Gameplay\Scripts\Server\interactions\base\interaction.py", line 2910, in get_participants TypeError: int() argument must be a string, a bytes-like object or a number, not 'ImmutableSlots' rtim=0