phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bbbede9c043f6b28920078b97573b81b' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bbbede9c043f6b28920078b97573b81b', -1, 1771234692, 1771234692, 'd849d800', 2, 0, 0)

Line : 187
File : sessions.php