phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8ff1aacae4f2e111b43aa9fa8b48e54c' 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 ('8ff1aacae4f2e111b43aa9fa8b48e54c', -1, 1766346260, 1766346260, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php