phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '31c87c824b09620ff7ba42559af034e0' 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 ('31c87c824b09620ff7ba42559af034e0', -1, 1762733409, 1762733409, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php