phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '87177b90b3f0fd1c82922f786fb0d966' for key 'PRIMARY'

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('87177b90b3f0fd1c82922f786fb0d966', -1, 1773813406, 1773813406, 'd849d86f', 4, 0, 0)

Line : 186
File : sessions.php