Test Didn't See a New Command for 90 Seconds

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  1. when i ran my testcases against (firefox browser versions 62,63,64 ) all my testcases(200 testcases) are running fine in saucelabs
  2. but when i change versions to (67,68,69) first few testcases are running fine but for later testcases i am getting this error “Test Didn’t See a New Command for 90 Seconds”

i have gone through below link i followed everything but getting same error
[Common Error Messages | Sauce Labs Documentation]
please go through above mentioned second point again (only those testcases which are kept in the starting[in build execution] are running fine across new versions)