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 ('18b53177cd7c093e87c5cd32fa70f9cb', -1, 1508509834, 1508509834, '36514902', 6, 0, 0)

Line : 211
File : sessions.php