phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b5a4e9d0a078a23805c35de7a049af6c' 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 ('b5a4e9d0a078a23805c35de7a049af6c', -1, 1764121242, 1764121242, 'd849d8b0', -4, 0, 0)

Line : 187
File : sessions.php