ALAWIII

the solution is pretty simple just find and copy the mpmath folder to {.buildozer} where your working directory: copy the mpmath folder to those two places: .buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/sympy/armeabi-v7a__ndk_target_21/sympy/ and to this...

It displays the content only when resizing the window !! garuada linux x11 . 

what is incremental builds ? targets = ["aarch64-apple-darwin", "aarch64-unknown-linux-gnu", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"] it failed to compile to aarch64-unknown-linux-gnu and it stopped to continue the whole process !! other builds were...