phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('659a78f16d95d8bbce87fdc0d6120820', -1, 1529741745, 1529741745, '36e0ebb7', 0, 0, 0)

Line : 187
File : sessions.php