phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'eb0a8a22a358856d2a02d5dc84f68bbe' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('eb0a8a22a358856d2a02d5dc84f68bbe', -1, 1414811034, 1414811034, '36c65e4c', -1, 0, 0)

Line : 187
File : sessions.php