phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1ab2df088c8b4da3040bb73977bc72eb' 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 ('1ab2df088c8b4da3040bb73977bc72eb', -1, 1770607952, 1770607952, 'd849d89c', -10, 0, 0)

Line : 187
File : sessions.php