phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f33b779d6b5b3905b7a71a83a2fbbd4b' 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 ('f33b779d6b5b3905b7a71a83a2fbbd4b', -1, 1770173882, 1770173882, 'd849d8a2', -4, 0, 0)

Line : 187
File : sessions.php