phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb2_sessions' is full

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e9e26e66ef79b4db74f67590b120135a', -1, 1547613567, 1547613567, '6b151046', 0, 0, 0)

Line : 186
File : sessions.php