My game runs correctly when I test the desktop version, but when I launch an android emulator and and try to run the game on the emulator the game closes and I get the logca
You should take a look here and follow these instructions : https://github.com/libgdx/libgdx/wiki/Manual-project-setup#asset-folder-setup
The Android project has a subfolder named assets, which is created automatically. Files available to the Android application must be placed here. This is problematic, because these same files must be available to the desktop application. Rather than maintain two copies of all the files, the desktop project should be configured to find the assets in the Android project [...]