I’m using Boost.MySQL library from the boost packages for c++. I have encountered an error when creating and destroying a database connection using local io_context and ssl_contexts.
Please see the minimal reproducible example below –

class DatabaseProcess : public MainframeComponent
{
public:
    // MainframeComponent dispatch module type is set to Main because DatabaseProcess doesn't run on its own thread.
    DatabaseProcess() : MainframeComponent(Horizon::System::RUNTIME_DATABASE) { }
    ~DatabaseProcess() 
    { 
    }
    
    void initialize(int segment_number = 1) override { HLog(error) << "Database not configured"; }
    void initialize(int segment_number, std::string host, int port, std::string user, std::string pass, std::string database);

    void finalize(int segment_number = 1) override 
    {
        // Close connection object.
        if (_connection != nullptr) {
            _connection->close();
        }
        
        bool value = _is_initialized;
        _is_initialized.compare_exchange_strong(value, false);
    }

    std::shared_ptr<boost::mysql::tcp_ssl_connection> get_connection() { return _connection; }

    bool is_initialized() { return _is_initialized.load(); }
protected:
    std::shared_ptr<boost::asio::ssl::context> _ssl_ctx{nullptr};
    std::shared_ptr<boost::mysql::tcp_ssl_connection> _connection{nullptr};
    boost::asio::io_context _db_io_context;
    std::atomic<bool> _is_initialized;
};