Menu / Tools / Options / Advanced / Java Optons.
Please uncheck “Use a Java runtime environment”.
Version: 7.6.4.1 (X86_64) / LibreOffice Community
Build ID: e19e193f88cd6c0525a17fb7a176ed8e6a3e2aa1
CPU threads: 6; OS: Windows 10.0 Build 19045; UI render: Skia/Vulkan; VCL: win
Locale: ru-RU (ru_RU); UI: en-US
Calc: CL threaded