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 ('228cd62c1a3cfb5cd5319128585e7c0d', -1, 1529474323, 1529474323, '365147db', 18, 0, 0)

Line : 187
File : sessions.php