AWStats did not find any valid log lines that match your LogFormat parameter, in the 50th first non commented lines read of your log.
Your log file /usr/local/apache/logs/access_log must have a bad format or LogFormat parameter setup does not match this format.
Your AWStats LogFormat parameter is:
1
This means each line in your web server log file need to have "combined log format" like this:
111.22.33.44 - - [10/Jan/2001:02:14:14 +0200] "GET / HTTP/1.1" 200 1234 "
http://www.fromserver.com/from.htm" "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"
And this is an example of records AWStats found in your log file (the record number 50 in your log):
104.231.41.24 - - [01/Mar/2019:11:23:27 +0100] "POST / HTTP/1.0" 204 -
Setup ('/etc/awstats/awstats.tt.com.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).
I end up whit this error when i follow that guide.