phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '349cd0f6f6a659911bf7251dc5cff5de' 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 ('349cd0f6f6a659911bf7251dc5cff5de', -1, 1771121485, 1771121485, 'd849d88a', -9, 0, 0)

Line : 187
File : sessions.php