Character Sheet Shopping Cart Error On "Purchase"

[Snailramp]

What happened?

After dragging items to the character sheet, the items shop up on the Shopping Cart popup. After hitting "Purchase for xGP" nothing happens and an error is generated. Items remain in shopping cart while GP is subtracted. Issue occurs in GM/Host side.

What is the expected behaviour?

No response

Relevant Errors and Warnings

foundry.js:6553 Error: A subclass of the FormApplication must implement the _updateObject method.
    at S._updateObject (foundry.js:6652:11)
    at S._onSubmit (foundry.js:6550:18)
    at S._onSubmit (character-gp-cost.js:72:11)
_onSubmit @ foundry.js:6553
await in _onSubmit (async)
_onSubmit @ character-gp-cost.js:72

Additional Support Details

Foundry Virtual Tabletop: Version 11 Stable, 11.308
Game System: ose, 1.9.3
Active Modules: 1
Performance Mode: 3

OS: Unknown
Client: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) FoundryVirtualTabletop/11.308.0 Chrome/110.0.5481.208 Electron/23.2.3 Safari/537.36
GPU: ANGLE (AMD, Radeon RX 580 Series Direct3D11 vs_5_0 ps_5_0, D3D11)
Max Texture Size: 16384

Scene: 6000 x 4600 | Grid Size: 100 | Padding Percentage: 0.25
Walls: 0 | Ambient Lights: 0 | Ambient Sounds: 0 | Tiles: 0 | Tokens: 0

Actors: 9 | Items: 12 | Journal Entries: 2 | Rollable Tables: 0 |
Playlists: 0 | Compendium Packs: 0 | Chat Messages: 10

Foundry VTT Core Version

None

Old-School Essentials Core Version

No response

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