phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9906f77bd8bfc44c91175362b36024ba' 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 ('9906f77bd8bfc44c91175362b36024ba', -1, 1769934268, 1769934268, 'd849d822', -4, 0, 0)

Line : 187
File : sessions.php