phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b3d12b21dff2495e09a4cb0fa781c35c' 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 ('b3d12b21dff2495e09a4cb0fa781c35c', -1, 1766064871, 1766064871, 'd849d803', -9, 0, 0)

Line : 187
File : sessions.php