/opt/mongo-cxx-driver-r3.7.2/src/bsoncxx/types/bson_value/view.hpp:111:30: error: ‘b_string’ does not name a type
111 | BSONCXX_DEPRECATED const b_string& get_utf8() const;
| ^~~~~~~~
/opt/mongo-cxx-driver-r3.7.2/src/bsoncxx/types/bson_value/view.hpp:119:11: error: ‘b_string’ does not name a type
119 | const b_string& get_string() const;
| ^~~~~~~~
/opt/mongo-cxx-driver-r3.7.2/src/bsoncxx/types/bson_value/view.hpp:287:25: error: field ‘_b_string’ has incomplete type ‘bsoncxx::v_noabi::types::bson_value::b_string’
287 | struct b_string _b_string;
| ^~~~~~~~~
/opt/mongo-cxx-driver-r3.7.2/src/bsoncxx/types/bson_value/view.hpp:287:16: note: forward declaration of ‘struct bsoncxx::v_noabi::types::bson_value::b_string’
287 | struct b_string _b_string;
| ^~~~~~~~
mongoex.cpp:29:32: error: ‘make_document’ has not been declared in ‘bsoncxx::v_noabi::builder::basic’
29 | using bsoncxx::builder::basic::make_document;
| ^~~~~~~~~~~~~
mongoex.cpp: In member function ‘int DBFileHandler::saveFiles(const std::string&, std::string&)’:
/home/vehant/swathy/mongo_cmake/mongoex.cpp:52:30: error: ‘class mongocxx::v_noabi::database’ has no member named ‘gridfs_bucket’
52 | auto bucket = db.gridfs_bucket();
| ^~~~~~~~~~~~~
mongoex.cpp: In member function ‘int DBFileHandler::retrieveFiles(const std::string&)’:
/home/vehant/swathy/mongo_cmake/mongoex.cpp:99:30: error: ‘class mongocxx::v_noabi::database’ has no member named ‘gridfs_bucket’
99 | auto bucket = db.gridfs_bucket();
| ^~~~~~~~~~~~~
mongoex.cpp:102:71: error: ‘make_document’ is not a member of ‘bsoncxx::v_noabi::builder::basic’; did you mean ‘sub_document’?
102 | bsoncxx::document::value query = bsoncxx::builder::basic::make_document(kvp("_id", bsoncxx::oid(fileId)));
| ^~~~~~~~~~~~~
如何解决这个问题？