SSH Tunnel Broken on version 6.14

I’ve been using PGAdmin V5.0 to SSH Tunnel to an AWS RDS PostgreSQL DB through an AWS EC2 VM for quite a while now with no problems.
The tunnel uses a pem key with a password.
Luckily I didn’t uninstall this version as I can still get connected, however yesterday I installed V6.14 but keep getting a ‘cannot establish SSH gateway’ error message as follows!!

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2022-10-11 20:22:48,238: ERROR pgadmin: Could not establish session to SSH gateway
Traceback (most recent call last):
File "C:\Program Files\pgAdmin 4\v6\web\pgadmin\utils\driver\psycopg2\server_manager.py", line 587, in create_ssh_tunnel
self.tunnel_object.start()
File "C:\Program Files\pgAdmin 4\v6\python\lib\site-packages\sshtunnel.py", line 1331, in start
self._raise(BaseSSHTunnelForwarderError,
File "C:\Program Files\pgAdmin 4\v6\python\lib\site-packages\sshtunnel.py", line 1174, in _raise
raise exception(reason)
sshtunnel.BaseSSHTunnelForwarderError: Could not establish session to SSH gateway
2022-10-11 20:22:48,243: ERROR pgadmin: Could not connect to server(#7) - 'Ubipix Database'.
Error: Failed to create the SSH tunnel.
Error: Could not establish session to SSH gateway
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The startup log is as follows:
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ALLOW_SAVE_PASSWORD = True
ALLOW_SAVE_TUNNEL_PASSWORD = False
APP_COPYRIGHT = "Copyright (C) 2013 - 2022, The pgAdmin Development Team"
APP_ICON = "pg-icon"
APP_NAME = "pgAdmin 4"
APP_RELEASE = 6
APP_REVISION = 14
APP_SUFFIX = ""
APP_VERSION = "6.14"
APP_VERSION_EXTN = ('.css', '.js', '.html', '.svg', '.png', '.gif', '.ico')
APP_VERSION_INT = 61400
APP_VERSION_PARAM = "ver"
AUTHENTICATION_SOURCES = ['internal']
AUTO_DISCOVER_SERVERS = True
AZURE_CREDENTIAL_CACHE_DIR = "........\Roaming\pgadmin\azurecredentialcache"
CA_FILE = "C:\Program Files\pgAdmin 4\v6\web\cacert.pem"
CHECK_EMAIL_DELIVERABILITY = False
CHECK_SESSION_FILES_INTERVAL = 24
CHECK_SUPPORTED_BROWSER = True
COMPRESS_LEVEL = 9
COMPRESS_MIMETYPES = ['text/html', 'text/css', 'text/xml', 'application/json', 'application/javascript']
COMPRESS_MIN_SIZE = 500
CONSOLE_LOG_FORMAT = "%(asctime)s: %(levelname)s %(name)s: %(message)s"
CONSOLE_LOG_LEVEL = 30
CONTENT_SECURITY_POLICY = "default-src ws: http: data: blob: 'unsafe-inline' 'unsafe-eval';"
COOKIE_DEFAULT_DOMAIN = None
COOKIE_DEFAULT_PATH = "/"
DATA_DIR = ".......\AppData\Roaming\pgadmin"
DEBUG = False
DEFAULT_BINARY_PATHS = {'pg': '$DIR/../runtime', 'ppas': ''}
DEFAULT_SERVER = "127.0.0.1"
DEFAULT_SERVER_PORT = 5050
DESKTOP_USER = "pgadmin4(at)pgadmin(dot)org"
EFFECTIVE_SERVER_PORT = 58388
ENABLE_BINARY_PATH_BROWSING = False
ENABLE_PSQL = True
ENHANCED_COOKIE_PROTECTION = True
FILE_LOG_FORMAT = "%(asctime)s: %(levelname)s %(name)s: %(message)s"
FILE_LOG_LEVEL = 30
HELP_PATH = "../../../docs/en_US/html/"
IS_WIN = True
KERBEROS_CCACHE_DIR = ".......\AppData\Roaming\pgadmin\krbccache"
KRB_APP_HOST_NAME = "127.0.0.1"
KRB_AUTO_CREATE_USER = True
KRB_KTNAME = "<KRB5_KEYTAB_FILE>"
LANGUAGES = {'en': 'English', 'zh': 'Chinese (Simplified)', 'cs': 'Czech', 'fr': 'French', 'de': 'German', 'it': 'Italian', 'ja': 'Japanese', 'ko': 'Korean', 'pl': 'Polish', 'pt_BR': 'Portuguese (Brazilian)', 'ru': 'Russian', 'es': 'Spanish'}
LDAP_ANONYMOUS_BIND = False
LDAP_AUTO_CREATE_USER = True
LDAP_BASE_DN = "<Base-DN>"
LDAP_BIND_USER = None
LDAP_CA_CERT_FILE = ""
LDAP_CERT_FILE = ""
LDAP_CONNECTION_TIMEOUT = 10
LDAP_DN_CASE_SENSITIVE = False
LDAP_KEY_FILE = ""
LDAP_SEARCH_BASE_DN = "<Search-Base-DN>"
LDAP_SEARCH_FILTER = "(objectclass=*)"
LDAP_SEARCH_SCOPE = "SUBTREE"
LDAP_SERVER_URI = "ldap://<ip-address>:<port>"
LDAP_USERNAME_ATTRIBUTE = "<User-id>"
LDAP_USE_STARTTLS = False
LOGIN_ATTEMPT_FIELDS = ['password']
LOGIN_BANNER = ""
LOG_FILE = ".......\AppData\Roaming\pgadmin\pgadmin4.log"
LOG_ROTATION_AGE = 1440
LOG_ROTATION_MAX_LOG_FILES = 90
LOG_ROTATION_SIZE = 10
MAIL_DEBUG = False
MAIL_PORT = 25
MAIL_SERVER = "localhost"
MAIL_USERNAME = ""
MAIL_USE_SSL = False
MAIL_USE_TLS = False
MASTER_PASSWORD_REQUIRED = True
MAX_LOGIN_ATTEMPTS = 3
MAX_QUERY_HIST_STORED = 20
MAX_SESSION_IDLE_TIME = 60
MFA_EMAIL_SUBJECT = None
MFA_ENABLED = False
MFA_FORCE_REGISTRATION = False
MFA_SUPPORTED_METHODS = ['email', 'authenticator']
MODULE_BLACKLIST = ['test']
NODE_BLACKLIST = []
OAUTH2_AUTO_CREATE_USER = True
OAUTH2_CONFIG = [{'OAUTH2_NAME': None, 'OAUTH2_DISPLAY_NAME': '<Oauth2 Display Name>', 'OAUTH2_CLIENT_ID': None, 'OAUTH2_CLIENT_SECRET': None, 'OAUTH2_TOKEN_URL': None, 'OAUTH2_AUTHORIZATION_URL': None, 'OAUTH2_API_BASE_URL': None, 'OAUTH2_USERINFO_ENDPOINT': None, 'OAUTH2_SCOPE': None, 'OAUTH2_ICON': None, 'OAUTH2_BUTTON_COLOR': None}]
ON_DEMAND_RECORD_COUNT = 1000
OVERRIDE_USER_INACTIVITY_TIMEOUT = True
PG_DEFAULT_DRIVER = "psycopg2"
PROXY_X_FOR_COUNT = 1
PROXY_X_HOST_COUNT = 0
PROXY_X_PORT_COUNT = 1
PROXY_X_PREFIX_COUNT = 0
PROXY_X_PROTO_COUNT = 1
SECURITY_EMAIL_SENDER = "no-reply(at)localhost"
SECURITY_EMAIL_SUBJECT_PASSWORD_CHANGE_NOTICE = "Your password for pgAdmin 4 has been changed"
SECURITY_EMAIL_SUBJECT_PASSWORD_NOTICE = "Your pgAdmin 4 password has been reset"
SECURITY_EMAIL_SUBJECT_PASSWORD_RESET = "Password reset instructions for pgAdmin 4"
SECURITY_EMAIL_VALIDATOR_ARGS = {'check_deliverability': False}
SEND_FILE_MAX_AGE_DEFAULT = 31556952
SERVER_MODE = False
SESSION_COOKIE_DOMAIN = None
SESSION_COOKIE_HTTPONLY = True
SESSION_COOKIE_NAME = "pga4_session"
SESSION_COOKIE_SAMESITE = "Lax"
SESSION_COOKIE_SECURE = False
SESSION_DB_PATH = "......\AppData\Roaming\pgadmin\sessions"
SESSION_EXPIRATION_TIME = 7
SESSION_SKIP_PATHS = ['/misc/ping']
SETTINGS_SCHEMA_VERSION = 33
SHOW_GRAVATAR_IMAGE = True
SQLALCHEMY_TRACK_MODIFICATIONS = False
SQLITE_PATH = ".......\AppData\Roaming\pgadmin\pgadmin4.db"
SQLITE_TIMEOUT = 500
STORAGE_DIR = "......\AppData\Roaming\pgadmin\storage"
STRICT_TRANSPORT_SECURITY = "max-age=31536000; includeSubDomains"
STRICT_TRANSPORT_SECURITY_ENABLED = False
SUPPORT_SSH_TUNNEL = True
TEST_SQLITE_PATH = "......\AppData\Roaming\pgadmin\test_pgadmin4.db"
THREADED_MODE = True
UPGRADE_CHECK_ENABLED = True
UPGRADE_CHECK_KEY = "pgadmin4"
UPGRADE_CHECK_URL = "https://www.pgadmin.org/versions.json"
USER_INACTIVITY_TIMEOUT = 0
WEBSERVER_AUTO_CREATE_USER = True
WEBSERVER_REMOTE_USER = "REMOTE_USER"
WEB_SERVER = "Python"
WTF_CSRF_HEADERS = ['X-pgA-CSRFToken']
X_CONTENT_TYPE_OPTIONS = "nosniff"
X_FRAME_OPTIONS = "SAMEORIGIN"
X_XSS_PROTECTION = "1; mode=block"
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