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)=(9c9bc55c8e5f45dd2d5809f833a9a18f) 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 ('9c9bc55c8e5f45dd2d5809f833a9a18f', -1, 1713550477, 1713550477, '12d949bb', -9, 0, 0)

Line : 187
File : sessions.php