Unexpected Error: Can't Load Model Schema

Hello,

I would like to ask for a solution regarding this problem where everytime I open PowerBI it say's can't load model schema.  On top of that.  Any pbix file I open seems to be this way.

Here is a screenshot of the problem.

I tried using just an excel data and still the problem is there.

Here is the error it generated:

Feedback Type:
Frown (Error)

Timestamp:
2017-10-13T01:19:45.0787000Z

Local Time:
2017-10-13T09:19:45.0787000+08:00

Session ID:
0b533511-d7b4-49d3-9d27-2d54cf41e497

Release:
October, 2017

Product Version:
2.51.4885.701 (PBIDesktop) (x86)

Error Message:
Couldn't load the model schema.

OS Version:
Microsoft Windows NT 6.1.7601 Service Pack 1 (x86 en-US)

CLR Version:
4.5 or later [Release Number = 378389]

Peak Virtual Memory:
1.05 GB

Private Memory:
256 MB

Peak Working Set:
317 MB

IE Version:
9.0.8112.16421

User ID:
a986248e-9732-42df-923a-47262e25cefb

Workbook Package Info:
1* - en-US, Query Groups: 0, fastCombine: Disabled, runBackgroundAnalysis: True.

Telemetry Enabled:
True

Model Default Mode:
Import

Snapshot Trace Logs:
C:\Users\nuser\AppData\Local\Microsoft\Power BI Desktop\FrownSnapShot887002608.zip

Performance Trace Logs:
C:\Users\nuser\AppData\Local\Microsoft\Power BI Desktop\PerformanceTraces.zip

Enabled Preview Features:
PBI_numericSlicerEnabled
PBI_daxTemplatesEnabled
CustomConnectors

Disabled Preview Features:
PBI_shapeMapVisualEnabled
PBI_EnableReportTheme
PBI_SpanishLinguisticsEnabled
PBI_reportBookmarks

Disabled DirectQuery Options:
PBI_DirectQuery_Unrestricted

Cloud:
GlobalCloud

Couldn't load the schema for the database model:
Couldn't load the model schema associated with this report. Make sure you have a connection to the server, and try again.

Activity ID:
null

Time:
Fri Oct 13 2017 09:19:06 GMT+0800 (China Standard Time)

DPI Scale:
100%

Supported Services:
Power BI

Formulas:


section Section1;

Thank you very much for reading this.