phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '49a974b4fcc23ef1d44d940d0c4f1814' 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 ('49a974b4fcc23ef1d44d940d0c4f1814', -1, 1759455371, 1759455371, 'd849d851', -4, 0, 0)

Line : 187
File : sessions.php