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 ('8b825ab5e2ae9b4fe584f155eb61e8ac', -1, 1524144181, 1524144181, '36c67a46', 15, 0, 0)

Line : 211
File : sessions.php