phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0dc71bf04047c6d551ab8a5010f6cdf6' 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 ('0dc71bf04047c6d551ab8a5010f6cdf6', -1, 1789110012, 1789110012, 'd849d94f', -9, 0, 0)

Line : 187
File : sessions.php