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 ('11fd468b99d1fc2a97a8e0d616db4f8c', -1, 1529850286, 1529850286, '36e11fbc', -9, 0, 0)

Line : 187
File : sessions.php