phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a0b6d75880eda1c01e6b05ac3df54972' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a0b6d75880eda1c01e6b05ac3df54972', -1, 1781029756, 1781029756, 'd849d955', -4, 0, 0)

Line : 187
File : sessions.php