phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b5ffdce2e4b47b508d669e13fa8212a9' 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 ('b5ffdce2e4b47b508d669e13fa8212a9', -1, 1757434169, 1757434169, 'd849d865', -9, 0, 0)

Line : 187
File : sessions.php