phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '30cec93c2dc8e2e43c478238d0c38dce' 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 ('30cec93c2dc8e2e43c478238d0c38dce', -1, 1770854129, 1770854129, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php