phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c155842e87b14b4ac819fac5fb2a5b4f' 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 ('c155842e87b14b4ac819fac5fb2a5b4f', -1, 1757001738, 1757001738, 'c0a81014', -9, 0, 0)

Line : 187
File : sessions.php