phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '647c801ca2e1b3c9eb0c3b2a1a61ffaa' 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 ('647c801ca2e1b3c9eb0c3b2a1a61ffaa', -1, 1714350105, 1714350105, 'c0a80201', 31, 0, 0)

Line : 187
File : sessions.php