phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '051d0159d98c278d06628ee8cf6f4796' 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 ('051d0159d98c278d06628ee8cf6f4796', -1, 1771117723, 1771117723, 'd849d800', -4, 0, 0)

Line : 187
File : sessions.php