phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a1c4f78016c0fa04d45ca198d5726393' 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 ('a1c4f78016c0fa04d45ca198d5726393', -1, 1715286125, 1715286125, '031196a3', -2, 0, 0)

Line : 187
File : sessions.php