phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '307aba8e5c2caca579a8f1c7fece880d' 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 ('307aba8e5c2caca579a8f1c7fece880d', -1, 1770732193, 1770732193, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php