Warning: No -tsa or -tsacert is provided and this jar is not timestamped

Here my cmd result:

D:\ionic\demoAds1>jarsigner -verbose -keystore my-release-key.keystore -storepas
s 123456 -keypass 123456 D:\ionic\demoAds1\platforms\android\app\build\outputs\a
pk\release\app-release-unsigned.apk techno
Picked up _JAVA_OPTIONS: -Xmx512M
 updating: META-INF/MANIFEST.MF
 updating: META-INF/TECHNO.SF
 updating: META-INF/TECHNO.RSA
  signing: AndroidManifest.xml
  signing: assets/www/assets/fonts/ionicons.woff
  signing: assets/www/assets/fonts/ionicons.woff2
  signing: assets/www/assets/icon/favicon.ico
  signing: assets/www/assets/imgs/logo.png
  signing: assets/www/build/main.css
  signing: assets/www/build/main.js
  signing: assets/www/build/polyfills.js
  signing: assets/www/build/sw-toolbox.js
  signing: assets/www/build/vendor.js
  signing: assets/www/cordova-js-src/android/nativeapiprovider.js
  signing: assets/www/cordova-js-src/android/promptbasednativeapi.js
  signing: assets/www/cordova-js-src/exec.js
  signing: assets/www/cordova-js-src/platform.js
  signing: assets/www/cordova-js-src/plugin/android/app.js
  signing: assets/www/cordova.js
  signing: assets/www/cordova_plugins.js
  signing: assets/www/index.html
  signing: assets/www/manifest.json
  signing: assets/www/plugins/cordova-plugin-admob-free/www/admob.js
  signing: assets/www/plugins/cordova-plugin-device/www/device.js
  signing: assets/www/plugins/cordova-plugin-ionic-keyboard/www/android/keyboard
.js
  signing: assets/www/plugins/cordova-plugin-ionic-webview/src/www/util.js
  signing: assets/www/plugins/cordova-plugin-splashscreen/www/splashscreen.js
  signing: assets/www/plugins/cordova-plugin-statusbar/www/statusbar.js
  signing: assets/www/plugins/cordova-promise-polyfill/www/Promise.js
  signing: assets/www/plugins/cordova-promise-polyfill/www/promise.min.js
  signing: assets/www/service-worker.js
  signing: build-data.properties
  signing: classes.dex
  signing: jsr305_annotations/Jsr305_annotations.gwt.xml
  signing: res/color/common_google_signin_btn_text_dark.xml
  signing: res/color/common_google_signin_btn_text_light.xml
  signing: res/color/common_google_signin_btn_tint.xml
  signing: res/drawable-hdpi-v4/common_full_open_on_phone.png
  signing: res/drawable-hdpi-v4/common_google_signin_btn_icon_dark_normal_backgr
ound.9.png
  signing: res/drawable-hdpi-v4/common_google_signin_btn_icon_light_normal_backg
round.9.png
  signing: res/drawable-hdpi-v4/common_google_signin_btn_text_dark_normal_backgr
ound.9.png
  signing: res/drawable-hdpi-v4/common_google_signin_btn_text_light_normal_backg
round.9.png
  signing: res/drawable-hdpi-v4/googleg_disabled_color_18.png
  signing: res/drawable-hdpi-v4/googleg_standard_color_18.png
  signing: res/drawable-land-hdpi-v4/screen.png
  signing: res/drawable-land-ldpi-v4/screen.png
  signing: res/drawable-land-mdpi-v4/screen.png
  signing: res/drawable-land-xhdpi-v4/screen.png
  signing: res/drawable-land-xxhdpi-v4/screen.png
  signing: res/drawable-land-xxxhdpi-v4/screen.png
  signing: res/drawable-mdpi-v4/common_google_signin_btn_icon_dark_normal_backgr
ound.9.png
  signing: res/drawable-mdpi-v4/common_google_signin_btn_icon_light_normal_backg
round.9.png
  signing: res/drawable-mdpi-v4/common_google_signin_btn_text_dark_normal_backgr
ound.9.png
  signing: res/drawable-mdpi-v4/common_google_signin_btn_text_light_normal_backg
round.9.png
  signing: res/drawable-mdpi-v4/googleg_disabled_color_18.png
  signing: res/drawable-mdpi-v4/googleg_standard_color_18.png
  signing: res/drawable-port-hdpi-v4/screen.png
  signing: res/drawable-port-ldpi-v4/screen.png
  signing: res/drawable-port-mdpi-v4/screen.png
  signing: res/drawable-port-xhdpi-v4/screen.png
  signing: res/drawable-port-xxhdpi-v4/screen.png
  signing: res/drawable-port-xxxhdpi-v4/screen.png
  signing: res/drawable-xhdpi-v4/common_full_open_on_phone.png
  signing: res/drawable-xhdpi-v4/common_google_signin_btn_icon_dark_normal_backg
round.9.png
  signing: res/drawable-xhdpi-v4/common_google_signin_btn_icon_light_normal_back
ground.9.png
  signing: res/drawable-xhdpi-v4/common_google_signin_btn_text_dark_normal_backg
round.9.png
  signing: res/drawable-xhdpi-v4/common_google_signin_btn_text_light_normal_back
ground.9.png
  signing: res/drawable-xhdpi-v4/googleg_disabled_color_18.png
  signing: res/drawable-xhdpi-v4/googleg_standard_color_18.png
  signing: res/drawable-xxhdpi-v4/common_google_signin_btn_icon_dark_normal_back
ground.9.png
  signing: res/drawable-xxhdpi-v4/common_google_signin_btn_icon_light_normal_bac
kground.9.png
  signing: res/drawable-xxhdpi-v4/common_google_signin_btn_text_dark_normal_back
ground.9.png
  signing: res/drawable-xxhdpi-v4/common_google_signin_btn_text_light_normal_bac
kground.9.png
  signing: res/drawable-xxhdpi-v4/googleg_disabled_color_18.png
  signing: res/drawable-xxhdpi-v4/googleg_standard_color_18.png
  signing: res/drawable/common_google_signin_btn_icon_dark.xml
  signing: res/drawable/common_google_signin_btn_icon_dark_focused.xml
  signing: res/drawable/common_google_signin_btn_icon_dark_normal.xml
  signing: res/drawable/common_google_signin_btn_icon_disabled.xml
  signing: res/drawable/common_google_signin_btn_icon_light.xml
  signing: res/drawable/common_google_signin_btn_icon_light_focused.xml
  signing: res/drawable/common_google_signin_btn_icon_light_normal.xml
  signing: res/drawable/common_google_signin_btn_text_dark.xml
  signing: res/drawable/common_google_signin_btn_text_dark_focused.xml
  signing: res/drawable/common_google_signin_btn_text_dark_normal.xml
  signing: res/drawable/common_google_signin_btn_text_disabled.xml
  signing: res/drawable/common_google_signin_btn_text_light.xml
  signing: res/drawable/common_google_signin_btn_text_light_focused.xml
  signing: res/drawable/common_google_signin_btn_text_light_normal.xml
  signing: res/mipmap-hdpi-v4/icon.png
  signing: res/mipmap-ldpi-v4/icon.png
  signing: res/mipmap-mdpi-v4/icon.png
  signing: res/mipmap-xhdpi-v4/icon.png
  signing: res/mipmap-xxhdpi-v4/icon.png
  signing: res/mipmap-xxxhdpi-v4/icon.png
  signing: res/xml/config.xml
  signing: resources.arsc
jar signed.

Warning:
No -tsa or -tsacert is provided and this jar is not timestamped. Without a times
tamp, users may not be able to validate this jar after the signer certificate's
expiration date (2046-02-04) or after any future revocation date.

D:\ionic\demoAds1>

This is not an error - it is a warning.
You have signed your apk successfully

  • Have you tried verifying the apk

yes i did