phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '644cd9c66dd070f804f66f65e3bec847' 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 ('644cd9c66dd070f804f66f65e3bec847', -1, 1752343733, 1752343733, 'd849d8a5', 3, 0, 0)

Line : 187
File : sessions.php