phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bdf2d97df6f4a4b9a9a8ed9c132f78bf' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bdf2d97df6f4a4b9a9a8ed9c132f78bf', -1, 1765390565, 1765390565, 'd849d8da', -4, 0, 0)

Line : 187
File : sessions.php