phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1b1834d79b2bf5b871b1496cb96a4ead' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1b1834d79b2bf5b871b1496cb96a4ead', -1, 1765761398, 1765761398, 'd849d836', -4, 0, 0)

Line : 187
File : sessions.php