phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '42d040690403d3e1e1f708826d733f94' 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 ('42d040690403d3e1e1f708826d733f94', -1, 1770591636, 1770591636, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php