phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '287d249a293d409134189f9c7dcc905e' 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 ('287d249a293d409134189f9c7dcc905e', -1, 1768889044, 1768889044, 'd849d879', 9, 0, 0)

Line : 187
File : sessions.php