phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3f931d9a7c0a48f74b29ca6ac6b0b5a2' 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 ('3f931d9a7c0a48f74b29ca6ac6b0b5a2', -1, 1766319172, 1766319172, 'd849d820', 44, 0, 0)

Line : 187
File : sessions.php