phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac7ea96b9e1d3935f7e68d4b11590fbc' 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 ('ac7ea96b9e1d3935f7e68d4b11590fbc', -1, 1711726531, 1711726531, '12cf6857', -9, 0, 0)

Line : 187
File : sessions.php