Seems like zlib is missing in Qt 5.14.1 build.

Application Manager configuration
Version ....................... 5.14.0
Hardware Id ................... auto (derived from network MAC address)
Qt version .................... 5.14.1
Qt installation ............... C:/Qt-nightly/5.14.1/msvc2017_64/bin
Debug or release .............. release
Installation prefix ...........
Tools only build .............. no
Enable support for QtWidgets .. no
Headless ...................... no
Touch emulation ............... no
QtCompositor support .......... no
Multi-process mode ............ no (auto detect)
Installer enabled ............. yes
Ext. DBus interfaces enabled .. yes
Tests enabled ................. no
Examples enabled .............. no
Crypto backend ................ WinCrypt
SSDP support .................. no
Shellserver support ........... no
Genivi support ................ no
libbacktrace support .......... no
Systemd workaround ............ no
System libarchive ............. no
System libyaml ................ no

C:\Users\IEUser\luxoft\qtapplicationmanager\3rdparty\libarchive\libarchive\archive_write_add_filter_gzip.c(41): fatal error C1083: Cannot open include file: 'zlib.h': No such file or directory
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\cl.EXE"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.16.27023\bin\HostX86\x86\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.