phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '12c15f5ccae1b2dda1944dc6e44d9512' 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 ('12c15f5ccae1b2dda1944dc6e44d9512', -1, 1763841310, 1763841310, 'd849d892', -9, 0, 0)

Line : 187
File : sessions.php