External exception E06D7363

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WinSCP 5.21.1

Error message:
External exception E06D7363

Stack trace:
(0012A922) KERNELBASE.dll.RaiseException
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(0004F2D5) SrjdDll.dll
(0003BE4D) SrjdDll.dll
(0003BB8F) SrjdDll.dll

(0012A922) KERNELBASE.dll.RaiseException
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(0004F2D5) SrjdDll.dll
(0003BE4D) SrjdDll.dll
(0003BB8F) SrjdDll.dll

(0012A922) KERNELBASE.dll.RaiseException
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(0004F2D5) SrjdDll.dll
(0003BE4D) SrjdDll.dll
(0003BB8F) SrjdDll.dll

Status: other

The problem happens rarely. I cannot reproduce it.