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 ('7d2a9593abc5ebd818f8518f28a85918', -1, 1545066851, 1545066851, '22e41e45', -8, 0, 0)

Line : 187
File : sessions.php