phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a96175c861af6e3224e7cb3b9e67bf6f' 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 ('a96175c861af6e3224e7cb3b9e67bf6f', -1, 1767273759, 1767273759, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php