phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8a7ba6d636595da9f015e19643ea07c5' 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 ('8a7ba6d636595da9f015e19643ea07c5', -1, 1743717770, 1743717770, '12743ed2', 1, 0, 0)

Line : 187
File : sessions.php