Source: https://aur.archlinux.org/cgit/aur.git/commit/?h=freefilesync&id=7e1524db8e0243ff9d7b7dcba64a3a5228295725 Author: Simon Brulhart Message: libssh2 v1.8.0 does not yet implement LIBSSH2_SFTP_DEFAULT_MODE, revert to previous impl. Method: sed -e 's/LIBSSH2_SFTP_DEFAULT_MODE/LIBSSH2_SFTP_S_IRWXU | LIBSSH2_SFTP_S_IRWXG | LIBSSH2_SFTP_S_IRWXO/g' -i 'FreeFileSync/Source/afs/sftp.cpp' Source: Author: B Stack Message: libssh2 v1.8.0 does not yet implement these two error messages. I do not know why distros are not serving libssh2 v1.9.0 which wa released June 20, 2019. Date: 2019-09-17T13:41:23Z diff -Naur /usr/src/freefilesync/10.20-0/libssh2/libssh2_wrap.h /usr/src/freefilesync/10.20-1/libssh2/libssh2_wrap.h --- 10.22-0/libssh2/libssh2_wrap.h 2020-03-18 15:49:57.839901161 -0400 +++ 10.22-1/libssh2/libssh2_wrap.h 2020-03-18 16:17:29.758794018 -0400 @@ -172,8 +172,6 @@ ZEN_CHECK_CASE_FOR_CONSTANT(LIBSSH2_ERROR_ENCRYPT); ZEN_CHECK_CASE_FOR_CONSTANT(LIBSSH2_ERROR_BAD_SOCKET); ZEN_CHECK_CASE_FOR_CONSTANT(LIBSSH2_ERROR_KNOWN_HOSTS); - ZEN_CHECK_CASE_FOR_CONSTANT(LIBSSH2_ERROR_CHANNEL_WINDOW_FULL); - ZEN_CHECK_CASE_FOR_CONSTANT(LIBSSH2_ERROR_KEYFILE_AUTH_FAILED); default: return replaceCpy(L"SSH status %x", L"%x", numberTo(sc));