phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '939635cf11c92e98480be9428a7289c1' 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 ('939635cf11c92e98480be9428a7289c1', -1, 1769064684, 1769064684, 'd849d879', -4, 0, 0)

Line : 187
File : sessions.php