phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4f36fe4c2f4d56966c9df5c0f8cbc786' 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 ('4f36fe4c2f4d56966c9df5c0f8cbc786', -1, 1780155989, 1780155989, 'd849d835', 1, 0, 0)

Line : 187
File : sessions.php