phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '12a56308f67ab1e7cdc4d95c68d800a5' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('12a56308f67ab1e7cdc4d95c68d800a5', -1, 1762311575, 1762311575, 'd849d887', -9, 0, 0)

Line : 187
File : sessions.php