Build error

[soheilqk]

After I added flip_widget to my project it does not build anymore and I face the error below:

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':gl_canvas:buildCMakeDebug[arm64-v8a]'.
  Build command failed.
  Error while executing process /home/soheil/Android/Sdk/cmake/3.18.1/bin/ninja with arguments {-C /home/soheil/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/gl_canvas-1.0.6/android/.cxx/Debug/5y31325o/arm64-v8a gl_canvas}
  ninja: Entering directory /home/soheil/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/gl_canvas-1.0.6/android/.cxx/Debug/5y31325o/arm64-v8a' [1/1] Linking CXX shared library /home/soheil/Desktop/projects/bubbu/frontend/build/gl_canvas/intermediates/cxx/Debug/5y31325o/obj/arm64-v8a/libgl_canvas.so FAILED: /home/soheil/Desktop/projects/bubbu/frontend/build/gl_canvas/intermediates/cxx/Debug/5y31325o/obj/arm64-v8a/libgl_canvas.so : && /home/soheil/Android/Sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ --target=aarch64-none-linux-android21 --gcc-toolchain=/home/soheil/Android/Sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/home/soheil/Android/Sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -O0 -fno-limit-debug-info -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--no-undefined -Qunused-arguments -shared -Wl,-soname,libgl_canvas.so -o /home/soheil/Desktop/projects/bubbu/frontend/build/gl_canvas/intermediates/cxx/Debug/5y31325o/obj/arm64-v8a/libgl_canvas.so CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o -lEGL -lGLESv2 -lGLESv1_CM -landroid -llog -latomic -lm && : CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o: In function std::_Rb_tree<long, std::pair<long const, CacheInfo*>, std::_Select1st<std::pair<long const, CacheInfo*> >, std::less, std::allocator<std::pair<long const, CacheInfo*> > >::_M_erase_aux(std::_Rb_tree_const_iterator<std::pair<long const, CacheInfo*> >)':
  /snap/flutter/current/usr/include/c++/9/bits/stl_tree.h:2513: undefined reference to std::_Rb_tree_rebalance_for_erase(std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)' CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o: In function std::_Rb_tree_const_iterator<std::pair<long const, CacheInfo*> >::operator++(int)':
  /snap/flutter/current/usr/include/c++/9/bits/stl_tree.h:374: undefined reference to std::_Rb_tree_increment(std::_Rb_tree_node_base const*)' CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o: In function std::_Rb_tree<long, std::pair<long const, CacheInfo*>, std::_Select1st<std::pair<long const, CacheInfo*> >, std::less, std::allocator<std::pair<long const, CacheInfo*> > >::_M_insert_node(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node<std::pair<long const, CacheInfo*> >)':
  /snap/flutter/current/usr/include/c++/9/bits/stl_tree.h:2366: undefined reference to std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)' CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o: In function std::_Rb_tree_iterator<std::pair<long const, CacheInfo> >::operator--()':
  /snap/flutter/current/usr/include/c++/9/bits/stl_tree.h:302: undefined reference to std::_Rb_tree_decrement(std::_Rb_tree_node_base*)' CMakeFiles/gl_canvas.dir/gl_canvas.cpp.o: In function std::_Rb_tree_iterator<std::pair<long const, CacheInfo*> >::operator++()':
  /snap/flutter/current/usr/include/c++/9/bits/stl_tree.h:287: undefined reference to std::_Rb_tree_increment(std::_Rb_tree_node_base*)' clang++: error: linker command failed with exit code 1 (use -v to see invocation) ninja: build stopped: subcommand failed.

I used flutter clean but it didn't help.

flip_widget version: 0.1.11
Flutter 3.0.1 • channel stable • https://github.com/flutter/flutter.git
Framework • revision fb57da5f94 (6 months ago) • 2022-05-19 15:50:29 -0700
Engine • revision caaafc5604
Tools • Dart 2.17.1 • DevTools 2.12.2

[singhcreations]

hey did you fixed this ? i am getting same error

[singhcreations]

A problem occurred configuring project ':gl_canvas'.

Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.