#258 adding dataset error logs

See merge request !10

#258 dataset error failsafe

See merge request !9

#258 fixing null check on script tag

See merge request !8

Feature/173 error reporting

See merge request !6

#258 removed maxRequestsPerCrawl

See merge request !5

Feature/173 error reporting

See merge request !4

#173 fixed json parse error and added general error catch

See merge request !2