phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21f47daf4932314cc00174c7ac542ab3' 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 ('21f47daf4932314cc00174c7ac542ab3', -1, 1714224704, 1714224704, '12e0d6d7', -2, 0, 0)

Line : 187
File : sessions.php