phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '244196518188f15a1904a64a68a217b3' 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 ('244196518188f15a1904a64a68a217b3', -1, 1771209464, 1771209464, 'd849d8a7', 2, 0, 0)

Line : 187
File : sessions.php