External exception C0000006

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WinSCP 5.7.4

Error message:
External exception C0000006

Stack trace:
(003AEF89)
(0005A67A) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0032F92F)

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.