phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f323e3a65e2c62c79fd5024cc352ba5b' 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 ('f323e3a65e2c62c79fd5024cc352ba5b', -1, 1770510676, 1770510676, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php