Only receiving the error "Error processing dependencies. You cannot call a method on a null-valued expression."

[ktimb]

I am only receiving the message "Error processing dependencies. You cannot call a method on a null-valued expression."

I've installed the latest NuGet, ScriptVersion, ConfigFile, StreamLogging, and Single Instance.

I'm using Powershell 7.3.6 running as Administrator.

Plex Media Server is version 1.32.6.7371-b6a09ad81 and is verified to be running.

After navigating to the folder containing PlexBackup (C:Windows\System32\PlexBackup), I run the command ".\PlexBackup.ps1"

I've tried using no config file, a config file with fully default values, and an edited config file.

I've run ".\PlexBackup.ps1 - Test".

I've used "Get-ChildItem" to verify that "PlexBackup.ps1" exists in the current directory.

I've tried downloading PlexBackup to another directory (directly to C:\PlexBackup) and running it there.

No matter what I only get the above message and no log files or other messages are created.

Can you offer any advice?

[alekdavis]

Since you are are getting an error from PlexBackup.ps1, there is no question whether it exists in the current directory. The error comes from this block:

    try {
        $psVersion = GetPowerShellversion
        Write-Verbose "Microsoft PowerShell v$psVersion"

        # Add custom folder(s) to the module path.
        SetModulePath

        # Load module dependencies.
        LoadModules $MODULES
    }
    catch {
        throw (New-Object System.Exception( `
            "Error processing dependencies.", $_.Exception))
    }

I would try running it with the -Debug -Verbose flags to see if there is mor info. The output should tell you in what method the error occurs. If this does not help, I would run it in the debugger to see what is going on.

[ktimb]

That gets me the following.

PS C:\PlexBackup-master> .\PlexBackup.ps1 -Debug -Verbose -Inactive
VERBOSE: Entered Main.
VERBOSE: Entered GetPowerShellVersion.
VERBOSE: Exiting GetScriptVersion.
Error processing dependencies. You cannot call a method on a null-valued expression.
VERBOSE: SingleInstance module is not loaded.
VERBOSE: Entered StopLogging.
VERBOSE: Logging has not started, so nothing to uninitialize.
VERBOSE: Exiting StopLogging.
VERBOSE: Exiting Main.

So I guess something is wrong with ScriptVersion?

[alekdavis]

What do you get if you enter this in PowerShell prompt:

$PSVersionTable.PSVersion

[ktimb]

PS C:\PlexBackup-master> $PSVersionTable.PSVersion

Major Minor Patch PreReleaseLabel BuildLabel

---

7 3 6

Sorry, I'm not sure how to get that to format correctly.
Major 7
Minor 3
Patch 6

[alekdavis]

Ah. It looks like they changed it in PowerShell 7. In PowerShell 5, I get

Major  Minor  Build  Revision
-----  -----  -----  --------
5      1      22621  1778

So, for now, I would try running it from an earlier version of PowerShell because I have not tested it in PowerShell 7 (I think PowerShell 7 has its own environment, but it does not remove older versions). I will try to port it to PowerShell 7, but can't promise when. Let me know if it fixes the issue.

[ktimb]

That's solved it. Thanks so much for your help and for the script!