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 ('720fa8dcd503a6be8f72774c55eef5bc', -1, 1566564346, 1566564346, '12e8ab12', 24, 0, 0)

Line : 187
File : sessions.php