model_loader; fix error when loading an anlysis with hidden samples

Link to #4354
Status Job ID Name Coverage
  Test Tools
passed #686703
test_tools

00:00:09

 
  Test Quality
passed #686704
web
code_quality

00:00:10

 
  Test Unit
passed #686705
web
test_browser_unit

00:00:24

 
  Deploy Review
passed #686706
web
deploy_review

00:00:07

manual #686707
web allowed to fail manual
stop_deploy_review
 
  Test Functional
passed #686710
web
chrome-browser-functional

00:03:49

passed #686708
web
ff32-browser-functional

00:03:42

passed #686709
web
ff45-browser-functional

00:04:09

passed #686711
legacy
old-chrome-browser-functional

00:03:25

 
  Test Functional External
passed #686714
web
chrome-browser-functional-external

00:01:10

passed #686712
web
ff32-browser-functional-external

00:01:19

passed #686713
web
ff45-browser-functional-external

00:01:32

passed #686715
legacy
old-chrome-browser-functional-external-chrome

00:01:22