phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac99b055b663342359272f568a74ab31' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('ac99b055b663342359272f568a74ab31', -1, 1496009739, 1496009739, '7f000001', -1, 0)

Line : 158
File : sessions.php