cant run on iphone?

[pengjinning]

Could not build the precompiled application for the device. Error (Xcode): Undefined symbol: _drop_dart_object

Error (Xcode): Undefined symbol: _free_WireSyncReturn

Error (Xcode): Undefined symbol: _get_dart_object

Error (Xcode): Undefined symbol: _new_box_autoadd_f64_0 Error (Xcode): Undefined symbol: _new_box_autoadd_i32_0 Error (Xcode): Undefined symbol: _new_box_autoadd_metadata_0 Error (Xcode): Undefined symbol: _new_box_autoadd_picture_0 Error (Xcode): Undefined symbol: _new_box_autoadd_u16_0 Error (Xcode): Undefined symbol: _new_box_autoadd_u64_0 Error (Xcode): Undefined symbol: _new_dart_opaque Error (Xcode): Undefined symbol: _new_uint_8_list_0

Error (Xcode): Undefined symbol: _store_dart_post_cobject

Error (Xcode): Undefined symbol: _wire_read_metadata

Error (Xcode): Undefined symbol: _wire_write_metadata

Error (Xcode): Linker command failed with exit code 1 (use -v to see invocation)