phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '12783811c2db07d56b0d99719c456c15' 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 ('12783811c2db07d56b0d99719c456c15', -1, 1714170601, 1714170601, '0311b515', -9, 0, 0)

Line : 187
File : sessions.php