when trying to add the wsp solution package with Powershell , the following error is received on the sp 2013 farm server standalone server
add-SPSolution -LitteralPath "c:\tools\LDAPCP.wsp"
Add-SPSolution : Solution manifest for solution '6ff99767-b95a-4143-8cd8-3978aa01fb80' failed validation, file manifest.xml, line 1276, character 8: The
'http://schemas.microsoft.com/sharepoint/:l' element is not supported in this context.
At line:1 char:1
+ Add-SPSolution -LiteralPath $lacppath
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (Microsoft.Share...dletAddSolution:SPCmdletAddSolution) [Add-SPSolution], SPException
+ FullyQualifiedErrorId : Microsoft.SharePoint.PowerShell.SPCmdletAddSolution
any idea why is this happening