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 ('588f4477ee0555fa80eb8af60e4b0901', -1, 1537511249, 1537511249, '36c6cd99', -2, 0, 0)

Line : 187
File : sessions.php