phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8c54161f2b22cf1a0a246fb20b4c9586' 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 ('8c54161f2b22cf1a0a246fb20b4c9586', -1, 1770138550, 1770138550, 'd849d805', -2, 0, 0)

Line : 187
File : sessions.php