packaging error

[onurkanbakirci]

When ı try to building .apk, ı got the following error:

Command failed: /usr/bin/python3 -m pythonforandroid.toolchain create --dist_name=myapp --bootstrap=sdl2 --requirements=python2,hostpython2,hostpython3,python3crystax,kivy,plyer --arch armeabi-v7a --copy-libs --color=always --storage-dir="/home/onurkan/test/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21
ENVIRONMENT:
LC_ADDRESS = 'tr_TR.UTF-8'
LC_NUMERIC = 'tr_TR.UTF-8'
LANG = 'en_US.UTF-8'
LC_NAME = 'tr_TR.UTF-8'
LC_TELEPHONE = 'tr_TR.UTF-8'
XDG_VTNR = '7'
XDG_GREETER_DATA_DIR = '/var/lib/lightdm-data/onurkan'
XDG_DATA_DIRS = '/usr/share/ubuntu:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop'
TERM = 'xterm-256color'
LC_IDENTIFICATION = 'tr_TR.UTF-8'
ANDROIDSDK = '/home/onurkan/.buildozer/android/platform/android-sdk'
QT_IM_MODULE = 'ibus'
DBUS_SESSION_BUS_ADDRESS = 'unix:abstract=/tmp/dbus-RZ06hHDhbT'
QT4_IM_MODULE = 'xim'
DEFAULTS_PATH = '/usr/share/gconf/ubuntu.default.path'
JOB = 'unity-settings-daemon'
VTE_VERSION = '4205'
SESSIONTYPE = 'gnome-session'
PWD = '/home/onurkan/test'
SESSION = 'ubuntu'
GTK2_MODULES = 'overlay-scrollbar'
GNOME_KEYRING_CONTROL = ''
UPSTART_SESSION = 'unix:abstract=/com/ubuntu/upstart-session/1000/1583'
COMPIZ_CONFIG_PROFILE = 'ubuntu'
GPG_AGENT_INFO = '/home/onurkan/.gnupg/S.gpg-agent:0:1'
UPSTART_JOB = 'unity7'
GTK_MODULES = 'gail:atk-bridge:unity-gtk-module'
LANGUAGE = 'en_US'
XDG_SESSION_PATH = '/org/freedesktop/DisplayManager/Session0'
LESSCLOSE = '/usr/bin/lesspipe %s %s'
LC_MEASUREMENT = 'tr_TR.UTF-8'
WINDOWID = '69209135'
LS_COLORS = 'rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.Z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.jpg=01;35:.jpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:'
IM_CONFIG_PHASE = '1'
MANDATORY_PATH = '/usr/share/gconf/ubuntu.mandatory.path'
ANDROIDNDK = '/home/onurkan/.buildozer/crystax-ndk-10.3.2'
UPSTART_EVENTS = 'xsession started'
XDG_SESSION_ID = 'c2'
GTK_IM_MODULE = 'ibus'
USER = 'onurkan'
XDG_CONFIG_DIRS = '/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg'
GNOME_KEYRING_PID = ''
COMPIZ_BIN_PATH = '/usr/bin/'
XDG_SEAT_PATH = '/org/freedesktop/DisplayManager/Seat0'
LOGNAME = 'onurkan'
QT_QPA_PLATFORMTHEME = 'appmenu-qt5'
_ = '/usr/local/bin/buildozer'
LC_TIME = 'tr_TR.UTF-8'
XDG_SESSION_DESKTOP = 'ubuntu'
LC_PAPER = 'tr_TR.UTF-8'
GDM_LANG = 'en_US'
HOME = '/home/onurkan'
GNOME_DESKTOP_SESSION_ID = 'this-is-deprecated'
CLUTTER_IM_MODULE = 'xim'
XAUTHORITY = '/home/onurkan/.Xauthority'
XDG_RUNTIME_DIR = '/run/user/1000'
GDMSESSION = 'ubuntu'
OLDPWD = '/home/onurkan'
UNITY_HAS_3D_SUPPORT = 'true'
SHELL = '/bin/bash'
LC_MONETARY = 'tr_TR.UTF-8'
XDG_SESSION_TYPE = 'x11'
DISPLAY = ':0'
UNITY_DEFAULT_PROFILE = 'unity'
QT_LINUX_ACCESSIBILITY_ALWAYS_ON = '1'
XDG_CURRENT_DESKTOP = 'Unity'
XDG_SEAT = 'seat0'
SHLVL = '1'
XMODIFIERS = '@im=ibus'
QT_ACCESSIBILITY = '1'
PACKAGES_PATH = '/home/onurkan/.buildozer/android/packages'
DESKTOP_SESSION = 'ubuntu'
LESSOPEN = '| /usr/bin/lesspipe %s'
ANDROIDAPI = '27'
UPSTART_INSTANCE = ''
SSH_AUTH_SOCK = '/run/user/1000/keyring/ssh'
PATH = '/home/onurkan/.buildozer/android/platform/apache-ant-1.9.4/bin:/home/onurkan/bin:/home/onurkan/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/onurkan/.local/bin/'
INSTANCE = ''
ANDROIDMINAPI = '21'

Buildozer failed to execute the last command
If the error is not obvious, please raise the log_level to 2
and retry the latest command.
In case of a bug report, please add a full log with log_level = 2

so, how can ı solve this problem?

[AndreMiras]

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