phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51cdcff737ed95de38ac1462b6a0c7df' 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 ('51cdcff737ed95de38ac1462b6a0c7df', -1, 1715040970, 1715040970, '0d3a89da', 17, 0, 0)

Line : 187
File : sessions.php