Fix "The given key was not present in the dictionary" using Solution Management

An unhandled exception was generated during the execution of the current web request.
The given key was not present in the dictionary.

Situation: hen accessing one folder of SharePoint, you may receive this message: Exception Details: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Resolution:
1. Open SharePoint Central Administration and select Operations.

2. Click on Solution Management.

3. Double-clcik on the name you want to deployed.

4. In Solution Properties, click Deploy Solution.

5. In Deploy Solution, click OK to finish the Deploy. Check it again to make sure we fix the problem.

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