phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '645e4879ed2e32d3dc354d16b20f5d04' 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 ('645e4879ed2e32d3dc354d16b20f5d04', -1, 1715841768, 1715841768, '038a6cb7', 0, 0, 0)

Line : 187
File : sessions.php