phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4df69af46ef57c8f76a30d67273ac3f6' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4df69af46ef57c8f76a30d67273ac3f6', -1, 1769959072, 1769959072, 'c0a81010', -501, 0, 0)

Line : 187
File : sessions.php