phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6b21178ada231bbe25f652a92ef7ed9b' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6b21178ada231bbe25f652a92ef7ed9b', -1, 1763794932, 1763794932, 'd849d832', -201, 0, 0)

Line : 187
File : sessions.php