phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a83c392e43ce88c62d08f108a9616464' 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 ('a83c392e43ce88c62d08f108a9616464', -1, 1758587788, 1758587788, 'd849d80a', -4, 0, 0)

Line : 187
File : sessions.php