phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51dfffd41248fdb9f14cf1c91bc9bb86' 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 ('51dfffd41248fdb9f14cf1c91bc9bb86', -1, 1715776396, 1715776396, '03931c5d', -4, 0, 0)

Line : 187
File : sessions.php