phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac2caba2e94ef262e12c4dfefb8ed2ee' 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 ('ac2caba2e94ef262e12c4dfefb8ed2ee', -1, 1752669926, 1752669926, 'd849d8a1', -9, 0, 0)

Line : 187
File : sessions.php