phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a78cefc4e9fda04c994f9a6fbc24ce84' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a78cefc4e9fda04c994f9a6fbc24ce84', -1, 1715883866, 1715883866, '12dd2fcb', -1, 0, 0)

Line : 187
File : sessions.php