QB Issue Resolution:

When you open QB, no company file shows up in the “No company open” list?  If you click on File > Open previous company, does anything show up there?  Have you searched your hard drive for the most recent QBW file?

Resolution for Issue 'please h have lost my company file and i cant do anything how can i get my company file back to normal please help me out' available: Yes (Solved).
Source: Intuit Community forum.

please h have lost my company file and i cant do anything how can i get my company file back to normal please help me out: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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