phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9959f99597d0f40c24ba8d2bbf89d8e2' 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 ('9959f99597d0f40c24ba8d2bbf89d8e2', -1, 1752081994, 1752081994, 'd849d8e4', -4, 0, 0)

Line : 215
File : sessions.php