phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '779408bf8aaa76e07e2e9789a8d3e9d1' 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 ('779408bf8aaa76e07e2e9789a8d3e9d1', -1, 1738792934, 1738792934, '12760104', 0, 0, 0)

Line : 235
File : sessions.php