flutter集成智能认证后，运行iOS报错

集成flutter版本的umeng_verify_sdk后，在iOS设备真机build运行时报错：

Could not build the precompiled application for the device.

Error (Xcode): Undefined symbol: _nw_connection_cancel

Error (Xcode): Undefined symbol: __nw_content_context_final_send

Error (Xcode): Undefined symbol: __nw_content_context_default_message

Error (Xcode): Undefined symbol: _nw_connection_copy_current_path

Error (Xcode): Undefined symbol: _nw_error_copy_cf_error

Error (Xcode): Undefined symbol: _nw_path_has_ipv4

Error (Xcode): Undefined symbol: _nw_connection_receive

Error (Xcode): Undefined symbol: _nw_parameters_create_secure_tcp

Error (Xcode): Undefined symbol: _nw_endpoint_create_host

Error (Xcode): Undefined symbol: __nw_parameters_configure_protocol_disable

Error (Xcode): Undefined symbol: _nw_connection_set_state_changed_handler

Error (Xcode): Undefined symbol: _nw_path_has_ipv6

Error (Xcode): Undefined symbol: _nw_parameters_set_required_interface_type

Error (Xcode): Undefined symbol: _nw_connection_create

Error (Xcode): Undefined symbol: __nw_parameters_configure_protocol_default_configuration

Error (Xcode): Undefined symbol: _nw_connection_set_queue

Error (Xcode): Undefined symbol: _nw_connection_send

Error (Xcode): Undefined symbol: _nw_connection_start

Error (Xcode): Undefined symbol: _nw_tls_copy_sec_protocol_options