NullReferenceException thrown when searching for template buttons in placement panel

I copied 2 boarding desks with their que, and only one of them got copied.

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COLLECTED HARDWARE DATA
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Application version: Alpha 33.2-0

Device
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Model: System Product Name (System manufacturer)

Operating system: Windows 10 (10.0.0) 64bit

RAM size: 65 GB

Battery status: Charging
Battery level: -1

Processor device
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Type: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
Core count: 12
Frequency: 3 GHz

Grahpics device
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Vendor: NVIDIA
Type: NVIDIA GeForce GTX 1070
Memory size: 8 GB

Screen summary
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Full screen: True
Resolution: 1920 x 1080 @ 60Hz