seems to be ok
had you poor robots.txt in root directory
go to search console
in crawl click on robots.txt tester
it should open your robots.txt and will also show if there is any error
if its showing it what you uploaded then you have successfully blocked the robots from accessing this content and resulting into crawler errors.
If not showing then it means you have not placed it in root directory (it should be placed at ******.com/robots.txt and not at ******.com/forum/robots.txt
do check spelling of your file to its should be robots.txt
if console is showing your robots file then ok
go to fetch as google bot type your site URL then if it crawls successfully, submit it for indexing along with clicking option submit associated urls.
after this google bots will start crawling your site and soon it will accept sitemap and indexing will be done.
Hope this will help you.
