phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '039664c68e3f78ff63c2425e8ac1dd7c' 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 ('039664c68e3f78ff63c2425e8ac1dd7c', -1, 1763832503, 1763832503, 'd849d815', -4, 0, 0)

Line : 187
File : sessions.php