Cubase suddenly quits on my MacBook Pro

I use Cubase Pro 11 and running Kontakt 6 for VST instruments, after I setting up my template and start using it, I found it often crashes, and Cubase suddenly quit

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 Model Name: MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports)

  Model Identifier: MacBookPro15,2

  Processor Name: Quad-Core Intel Core i5

  Processor Speed: 2.4 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 6 MB

  Hyper-Threading Technology: Enabled

 Memory: 16 GB

please help me to fix it, or what the reason for that issue

[Edited by Moderator]