apk not installed

Derawge

Hello!, :D I created a small game on Godot 3.0 and it works fine on my desktop, but when i export it for Android and try to install the .apk on my phone, it shows the message: "App not installed". I set up everything correctly, the adb, the jarsigner, the debug.keystore and it still doesn't work! One thing that i found strange is that i made a smaller project before this one, with just two scenes and it worked perfectly, even the installation. So i'm really confused with this problem. I just doesn't want to install. I've searched a lot already and i hope somebody can help me here. :(

ps: My phone is a Samsung Galaxy s7

Derawge

I runned the One click Deploy on my phone and got this on the denug window:

These two errors appeared: "failure[INSTALL_PARSE_FAILED_NO_CERTIFICATES failed to collect certificates from:...]" "Error type 3" "Activity class does not exist"