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 ('8163d42c18e1e9044e5a38d671deba0f', -1, 1519240233, 1519240233, '36e22175', 6, 0, 0)

Line : 187
File : sessions.php