phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4a8720ffcefbfa969656d105c575e971' 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 ('4a8720ffcefbfa969656d105c575e971', -1, 1711653503, 1711653503, '2cde6831', 21, 0, 0)

Line : 187
File : sessions.php