phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '84945b85b63796c20434011a96071cde' 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 ('84945b85b63796c20434011a96071cde', -1, 1772063204, 1772063204, 'd849d87b', -4, 0, 0)

Line : 215
File : sessions.php