phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9c6ae3179c07d0ce6a9d5419ef7ca50b' 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 ('9c6ae3179c07d0ce6a9d5419ef7ca50b', -1, 1786399774, 1786399774, 'd849d81a', 3, 0, 0)

Line : 187
File : sessions.php