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 ('54d6acfd0eaf6dea7fb60126c9e00638', -1, 1524412608, 1524412608, '36517577', 20, 0, 0)

Line : 211
File : sessions.php