phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1fa423eef633ac6c8ec6d192d606e601' 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 ('1fa423eef633ac6c8ec6d192d606e601', -1, 1771844264, 1771844264, 'd849d890', 1, 0, 0)

Line : 187
File : sessions.php