Can't run Qt3D examples on Android with OpenGL renderer

When I try to run the simple qml example for Qt3D on an Android device (Samsung Galaxy Tab S8) it does not start due to not finding the rhi renderer plugin.

Then, I force the OpenGL renderer by adding the following line to main.cpp

qputenv("QT_DEBUG_PLUGINS", "1"); qputenv("QT3D_RENDERER", "opengl");

The app now runs but it does not show any mesh on screen (although on screen stats show 2 geometries, 13440 vertices, etc). Looking at the debug output, I see shader compilation errors as follows:

I AdrenoGLES-0: WARNING: 0:3: extension 'GL_ARB_fragment_coord_conventions' is not supported
I AdrenoGLES-0: ERROR: 0:6: 'attribute' : supported in vertex shaders only
I AdrenoGLES-0: ERROR: 0:7: 'attribute' : supported in vertex shaders only
I AdrenoGLES-0: ERROR: 2 compilation errors. No code generated.
11-15 13:57:03.770 8626 8654 I AdrenoGLES-0:
W libsimple-qml_arm64-v8a.so: QOpenGLShader::compile(Fragment): WARNING: 0:3: extension 'GL_ARB_fragment_coord_conventions' is not supported
W libsimple-qml_arm64-v8a.so: ERROR: 0:6: 'attribute' : supported in vertex shaders only
W libsimple-qml_arm64-v8a.so: ERROR: 0:7: 'attribute' : supported in vertex shaders only
W libsimple-qml_arm64-v8a.so: ERROR: 2 compilation errors. No code generated.
11-15 13:57:03.770 8626 8654 W libsimple-qml_arm64-v8a.so:
11-15 13:57:03.770 8626 8654 W libsimple-qml_arm64-v8a.so:
W libsimple-qml_arm64-v8a.so: *** Problematic Fragment shader source code ***
W libsimple-qml_arm64-v8a.so: #version 100
W libsimple-qml_arm64-v8a.so: #ifdef GL_KHR_blend_equation_advanced
W libsimple-qml_arm64-v8a.so: #extension GL_ARB_fragment_coord_conventions : enable
W libsimple-qml_arm64-v8a.so: #extension GL_KHR_blend_equation_advanced : enable
W libsimple-qml_arm64-v8a.so: #endif
W libsimple-qml_arm64-v8a.so: #ifndef GL_FRAGMENT_PRECISION_HIGH
W libsimple-qml_arm64-v8a.so: #define highp mediump
W libsimple-qml_arm64-v8a.so: #endif
W libsimple-qml_arm64-v8a.so: #line 1
11-15 13:57:03.770 8626 8654 W libsimple-qml_arm64-v8a.so:
W libsimple-qml_arm64-v8a.so: #define LAYER_diffuse
W libsimple-qml_arm64-v8a.so: #define LAYER_specular
W libsimple-qml_arm64-v8a.so: #define LAYER_normal
W libsimple-qml_arm64-v8a.so: uniform highp vec3 eyePosition;
W libsimple-qml_arm64-v8a.so: attribute highp vec3 worldPosition;
W libsimple-qml_arm64-v8a.so: attribute highp vec3 worldNormal;
W libsimple-qml_arm64-v8a.so: uniform highp float shininess;
W libsimple-qml_arm64-v8a.so: uniform highp vec4 ks;
W libsimple-qml_arm64-v8a.so: uniform highp vec4 kd;
W libsimple-qml_arm64-v8a.so: uniform highp vec4 ka;
W libsimple-qml_arm64-v8a.so: /****************************************************************************