phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '836a4e00871ff7bb61be86a088f067d1' 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 ('836a4e00871ff7bb61be86a088f067d1', -1, 1765885470, 1765885470, 'd849d892', -4, 0, 0)

Line : 187
File : sessions.php