phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7854a78f7b60f993aa720e4677a365ec' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7854a78f7b60f993aa720e4677a365ec', -1, 1764387788, 1764387788, 'd849d87c', -9, 0, 0)

Line : 187
File : sessions.php