phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '78c8245e202a469b9fa436526d1bdb5f' 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 ('78c8245e202a469b9fa436526d1bdb5f', -1, 1736359209, 1736359209, '12deb8b8', 1, 0, 0)

Line : 187
File : sessions.php