Can't connect to Azure Database for MariaDB server

i am trying to connect frappe to Azure Database for MariaDB server when creating a site, so i have wrote this command:

bench new-site test.test --db-host ibrahim-embaby.mariadb.database.azure.com --db-ro
ot-username ibrahim@ibrahim-embaby --db-root-password maraiadbpassword

and when executing this command, I face this error:

MariaDB version compatibility checks failed, make sure you're running a supported version.
Traceback (most recent call last):
  File "/home/frappe/.pyenv/versions/3.10.12/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/frappe/.pyenv/versions/3.10.12/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 114, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 20, in main
    click.Group(commands=commands)(prog_name="bench")
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 76, in new_site
    _new_site(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/installer.py", line 80, in _new_site
    install_db(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/installer.py", line 155, in install_db
    setup_database(force, source_sql, verbose, no_mariadb_socket)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/__init__.py", line 20, in setup_database
    return frappe.database.mariadb.setup_db.setup_database(
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/setup_db.py", line 58, in setup_database
    bootstrap_database(db_name, verbose, source_sql)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/setup_db.py", line 73, in bootstrap_database
    if not check_database_settings():
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/setup_db.py", line 110, in check_database_settings
    mariadb_variables = get_mariadb_variables()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/setup_db.py", line 15, in get_mariadb_variables
    return frappe._dict(frappe.db.sql("show variables"))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/database.py", line 194, in sql
    self.connect()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/database.py", line 109, in connect
    self._conn = self.get_connection()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/database.py", line 102, in get_connection
    conn = self._get_connection()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/database.py", line 108, in _get_connection
    return self.create_connection()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/database/mariadb/database.py", line 111, in create_connection
    return pymysql.connect(**self.get_connection_settings())
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/connections.py", line 358, in __init__
    self.connect()
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/connections.py", line 664, in connect
    self._request_authentication()
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/connections.py", line 954, in _request_authentication
    auth_packet = self._read_packet()
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/connections.py", line 772, in _read_packet
    packet.raise_for_error()
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/protocol.py", line 221, in raise_for_error
    err.raise_mysql_exception(self._data)
  File "/home/frappe/frappe-bench/env/lib/python3.10/site-packages/pymysql/err.py", line 143, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.OperationalError: (9002, 'FATAL: Invalid Username specified. Please check the Username and retry connection. The Username should be in <username@hostname> format.\x00')

so what is the problem i think I wrote the username in a correct format