PAILLE [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package Com.ccc.Notification Les signatures ne correspondent pas à la version précédemment installée; Ignorer!]
try uninstalling the app. I met this problem on my project too.
This helped me, so hopefuly will help someone else:
adb uninstall "com.domain.yourapp"
############### OR #########################
try replacing the current version with the previous one
adb install -r -d "PATH_TO_APK\APP_NAME.apk"
-r: Reinstall an exisiting app, keeping its data.
-d: Allow version code downgrade.
Coding Era