Check your error log and if you do not finf any usable error code. Revert back to php 7.1.2. Are you using custom template.This could be a issue with either VM, a plugin or template changes.
Jörgen @ Kreativ Fotografi
Thanks for
So I have see for erros ... And I have found those errors when php is 7.2.10 only in 7.2.10
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2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 2452
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3900
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3901
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3879
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 1014
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3902
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 608
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3793
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 2206
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3795
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 2954
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3794
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 1481
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 2223
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 3535
2018-10-09 12:50:22 ERROR vmError: Memory limit reached in model product getProduct() 2458
It's a shorcut of the list (I have 3000 products on my shop)
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If I place php 7.1.22 no one errors
What sort of problem is

For I don't know for an issue