phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '42c479302c05598dab9a0d07f7b2ef3d' 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 ('42c479302c05598dab9a0d07f7b2ef3d', -1, 1774579462, 1774579462, 'd849d885', -4, 0, 0)

Line : 187
File : sessions.php