phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c8aa45c35f0b4ee6278226f41e0ebbce' 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 ('c8aa45c35f0b4ee6278226f41e0ebbce', -1, 1777640514, 1777640514, 'd849d945', -201, 0, 0)

Line : 187
File : sessions.php