phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7146c66fda57fa81bcc4d0069fefb69b' 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 ('7146c66fda57fa81bcc4d0069fefb69b', -1, 1768754890, 1768754890, 'd849d879', -4, 0, 0)

Line : 187
File : sessions.php