phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '91d8a778b7396038e680a996410ef74d' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('91d8a778b7396038e680a996410ef74d', -1, 1715891509, 1715891509, '038f04b5', -8, 0, 0)

Line : 187
File : sessions.php