Failure on nightly in several snippet tests - Error creating snippet

Summary

Happened in several nightly runs affecting all snippet tests (error on snippet creation):

./qa/specs/features/browser_ui/3_create/snippet/add_comment_to_snippet_spec.rb ./qa/specs/features/browser_ui/3_create/snippet/clone_push_pull_personal_snippet_spec.rb ./qa/specs/features/browser_ui/3_create/snippet/clone_push_pull_project_snippet_spec.rb ./qa/specs/features/browser_ui/3_create/snippet/create_project_snippet_spec.rb ./qa/specs/features/browser_ui/3_create/snippet/create_personal_snippet_spec.rb ./qa/specs/features/browser_ui/3_create/snippet/share_snippet_spec.rb

https://gitlab.com/gitlab-org/quality/nightly/-/jobs/732486997

https://gitlab.com/gitlab-org/quality/nightly/-/jobs/732486935

https://gitlab.com/gitlab-org/quality/nightly/-/jobs/734963137

https://gitlab.com/gitlab-org/quality/nightly/-/jobs/734963161

Stack trace

See the sreenshot for the error, QA logs only signal that the snippet wasn't created, e.g:

     QA::Page::Validatable::PageValidationError:
       snippet_title_content did not appear on QA::Page::Dashboard::Snippet::Show as expected

Screenshot / HTML page

image

Possible fixes