phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ab496b18ff8ba597b29bdb026e500511' 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 ('ab496b18ff8ba597b29bdb026e500511', -1, 1768359129, 1768359129, 'd849d883', 4, 0, 0)

Line : 187
File : sessions.php