phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '63d50d8c9c09e0e64ce902af7435dcc7' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('63d50d8c9c09e0e64ce902af7435dcc7', -1, 1769885852, 1769885852, 'd849d86e', 3, 0, 0)

Line : 187
File : sessions.php