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 ('36aaa5c0c79914c57aa9a6f6f4d12e1a', -1, 1516241471, 1516241471, '36521d8d', -9, 0, 0)

Line : 187
File : sessions.php