Grunt adbpush error

Hello i have setup ODK-X on a ubuntu desktop computer and wanted to test if the survey will go to my phone. When i execute grunt adbpush i have this error

I don’t know why the error always show sdcard as i have no sdcard on my phone.
All applications are installed (odk-x survy, odk-x services and odk-x tables).
Do anyone have an idea to resolve this error?
Thanks in advance

The /sdcard is a historic Android thing as it refers to the non-protected storage area currently (which used to be a SDcard, now it’s just a partition).

You should try to use “adb devices” to see if your Android device can communicate with your computer. If you do not authorize adb to talk to your device it will not work.

Check out the documentation: Android Debug Bridge (adb)  |  Android Studio  |  Android Developers

In the end, ODK-X is taking advantage of ADB. First make sure ADB is functiong properly.