phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2b51aacad4bd7de5a01e3b7224ae7100' 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 ('2b51aacad4bd7de5a01e3b7224ae7100', -1, 1772252600, 1772252600, 'd849d851', -4, 0, 0)

Line : 187
File : sessions.php