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 ('8fb21e5396697da915cc057bfe0f4d1e', -1, 1534635104, 1534635104, '36e0dc48', -2, 0, 0)

Line : 187
File : sessions.php