phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '90f97e9d14a3401c9b5f897db6c3237d' 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 ('90f97e9d14a3401c9b5f897db6c3237d', -1, 1770668338, 1770668338, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php