phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5dad94c0b5e231acdf3ddd5a58fe29c3' 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 ('5dad94c0b5e231acdf3ddd5a58fe29c3', -1, 1519248114, 1519248114, '36e33093', 25, 0, 0)

Line : 187
File : sessions.php