phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : -1 ERROR: duplicate key value violates unique constraint "phpbb_session_pkey" DETAIL: Key (session_id)=(21e39597bf445c6d2f56af20fffa4f8f) already exists.

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('21e39597bf445c6d2f56af20fffa4f8f', -1, 1713881647, 1713881647, '12dca0d8', 169, 0, 0)

Line : 187
File : sessions.php