phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '645856a35e996d2e2a0639f9b47ba9d2' 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 ('645856a35e996d2e2a0639f9b47ba9d2', -1, 1715631832, 1715631832, '12bcc4df', 0, 0, 0)

Line : 187
File : sessions.php