phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a9d4ebefa9ce175fe2dc5663c2327486' 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 ('a9d4ebefa9ce175fe2dc5663c2327486', -1, 1757615252, 1757615252, 'd849d822', -4, 0, 0)

Line : 187
File : sessions.php