phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a4a6b6a93c8f79be6a1b56dbbba49453' 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 ('a4a6b6a93c8f79be6a1b56dbbba49453', -1, 1757101076, 1757101076, 'd849d88e', -1, 0, 0)

Line : 187
File : sessions.php