phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a606fe838309e103ea4145b9b7444f5c' 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 ('a606fe838309e103ea4145b9b7444f5c', -1, 1789507712, 1789507712, 'd849d9ad', -4, 0, 0)

Line : 187
File : sessions.php