phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '90b6fbf4ff0245a90a077451e212f01f' 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 ('90b6fbf4ff0245a90a077451e212f01f', -1, 1768426972, 1768426972, 'd849d885', -9, 0, 0)

Line : 187
File : sessions.php