Crash when "rotate thumbnail" enabled

[Programmist11180]

Hello.
Phototonic crashes when option "Rotate thumbnail according to Exif orientation value" enabled. With any type of image file.

$ gdb -q phototonic
Reading symbols from phototonic...
Reading symbols from /usr/lib/debug/.build-id/26/2bf8cbfb6e77ad724aeb33845cd5f4d59454a1.debug...
(gdb) run
Starting program: /usr/bin/phototonic
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[New Thread 0xf2c93b40 (LWP 17483)]
[New Thread 0xf22ffb40 (LWP 17484)]
[New Thread 0xf14efb40 (LWP 17485)]
[New Thread 0xe618bb40 (LWP 17486)]
[New Thread 0xe5849b40 (LWP 17487)]
[New Thread 0xe4b9fb40 (LWP 17488)]
[New Thread 0xe439eb40 (LWP 17489)]
Thread 1 "phototonic" received signal SIGSEGV, Segmentation fault.
0x565a372f in ImageViewer::rotateByExifRotation (this=0x2e0066, image=..., imageFullPath=...) at ./ImageViewer.cpp:253

Distr: Debian testing.
Qt: v5.15.4
Phototonic: v2.1
Exiv2: v0.27.5

[Programmist11180]

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965063
Seems bug only in Debian...