phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a30dce78b903793a1b3ab5eb4be54b57' 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 ('a30dce78b903793a1b3ab5eb4be54b57', -1, 1770213522, 1770213522, 'd849d805', -9, 0, 0)

Line : 187
File : sessions.php