Event ID 6398 : The Execute method of job definition Microsoft.SharePoint.Administration.SPSqmTimerJobDefinition (ID 58c09065-46c2-43a1-b6cc-fa5128d9723f) threw an exception. More information is included below.

Problem
6398:
The Execute method of job definition Microsoft.SharePoint.Administration.SPSqmTimerJobDefinition (ID 58c09065-46c2-43a1-b6cc-fa5128d9723f) threw an exception. More information is included below.
Data is Null. This method or property cannot be called on Null values.

Solution
The issue is your SharePoint timer job, Customer Experince Improvement Program [CEIP] is trying to gather report and it is failing.
You can open Central Admin with admin access,
- Navigate to Monitoring
- Click on Review Job Definitions
- Click on CEIP Data Collection
- Check the time when it is executing and match with the event log error timing. If it is same then this is the timer job creating issue for you.
- Click on the job and disable the job.