I am trying to deploy the metadata from a Non Winter 19 sandbox to a Winter 19 preview version sandbox, but I am getting following internal server errors on test classes

• Internal Salesforce Error: 398686825-35477 (-1379387317) (-1379387317) 
  Stack Trace: null
• Internal Salesforce Error: 398686825-35476 (-41106703) (-41106703) 
  Stack Trace: null
• Also when I try to access the test failure page later it it says 
  • 

Other Notes: When I execute the same test class manually , it passes in a few seconds , but during deployment it says the same test class has long execution time more than 5 min

Does anybody has faced the same issue and know about the workaround?

I am trying to deploy the metadata from a Non Winter 19 sandbox to a Winter 19 preview version sandbox, but I am getting following internal server errors on test classes

• Internal Salesforce Error: 398686825-35477 (-1379387317) (-1379387317) 
  Stack Trace: null
• Internal Salesforce Error: 398686825-35476 (-41106703) (-41106703) 
  Stack Trace: null
• Also when I try to access the test failure page later it it says 
  • 

Other Notes: When I execute the same test class manually , it passes in a few seconds , but during deployment it says the same test class has long execution time more than 5 min

Does anybody has faced the same issue and know about the workaround?