phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1c8fffc135c2eeb3e1c1b98a5a2b7264' 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 ('1c8fffc135c2eeb3e1c1b98a5a2b7264', -1, 1758625733, 1758625733, 'd849d80a', -4, 0, 0)

Line : 187
File : sessions.php