Test app crashes when i try to login

[danek130995]

signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x7fc0c73ff0
x0 0000007fc0c74818 x1 0000007fc0c741d8 x2 0000007fc0c747f0 x3 0000007fc0c74950
x4 00000071eb419978 x5 706e694c00000000 x6 00000080cce9eef0 x7 fefefefeff646d6e
x8 000000718d5d3b7b x9 0000000000000000 x10 000000000000006c x11 0000000000000001
x12 0000007fc0c74c20 x13 0000007fc0c74c60 x14 138fbfd8ae7b6ad7 x15 0000007fc0c74cd0
x16 000000727e19c7d0 x17 000000727e12a46c x18 000000000000000f x19 000000718d5d3b0f
x20 0000007fc0c747f0 x21 0000007fc0c74818 x22 000000007fffffff x23 000000718d5d3b0f
x24 0000007fc0c74270 x25 000000000000006c x26 00000071eb419960 x27 0000000000000000
x28 0000007280d14188 x29 0000007fc0c747e0
sp 0000007fc0c74050 lr 000000727e16b094 pc 000000727e174bc8
backtrace:
#00 pc 00000000000cdbc8 /apex/com.android.runtime/lib64/bionic/libc.so (__sfvwrite) (BuildId: 4ac85d8f66f3a910f00f4ebf4d6bcd1a)
#1 pc 00000000000c4090 /apex/com.android.runtime/lib64/bionic/libc.so (__vfprintf+10760) (BuildId: 4ac85d8f66f3a910f00f4ebf4d6bcd1a)
#2 pc 00000000000e1a24 /apex/com.android.runtime/lib64/bionic/libc.so (vsnprintf+152) (BuildId: 4ac85d8f66f3a910f00f4ebf4d6bcd1a)
#03 pc 0000000000025514 /data/app/org.openvoipalliance.phonelibexample-qfQqEC6-hMUmyAxn4BISLw==/lib/arm64/libbctoolbox.so (bctbx_strdu
#04 pc 000000000070ded4 /data/app/org.openvoipalliance.phonelibexample-qfQqEC6-hMUmyAxn4BISLw==/lib/arm64/liblinphone.so (BuildId: a3d
#05 pc 00000000000259c8 /data/app/org.openvoipalliance.phonelibexample-qfQqEC6-hMUmyAxn4BISLw==/lib/arm64/libbctoolbox.so (bctbx_logv+
#06 pc 000000000076ee74 /data/app/org.openvoipalliance.phonelibexample-qfQqEC6-hMUmyAxn4BISLw==/lib/arm64/liblinphone.so (BuildId: a3d
..... and so on

What might be the problem? Could you please provide with the example of filled fields? What format? I want to connect to asterisk sever