### Is there an existing issue for this? - [X] I have searched the existing issues ### Community Note * Please vote on this issue by adding a :thumbsup: [reaction](https://blog.github.com/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/) to the original issue to help the community and maintainers prioritize this request * Please do not leave comments along the lines of "+1", "me too" or "any updates", they generate extra noise for issue followers and do not help prioritize the request * If you are interested in working on this issue or have submitted a pull request, please leave a comment and review the [contribution guide](https://github.com/hashicorp/terraform-provider-azurerm/blob/main/contributing/README.md) to help. ### Terraform Version 1.10.0 ### AzureRM Provider Version latest ### Affected Resource(s)/Data Source(s) azurerm_virtual_machine_extension ### Terraform Configuration Files ```hcl resource "azurerm_virtual_machine_extension" "PsModulesGeneral" { count = var.mycount ? 1 : 0 name = "install_general_tools" virtual_machine_id = vmId publisher = "Microsoft.Compute" type = "CustomScriptExtension" type_handler_version = "1.9" auto_upgrade_minor_version = true protected_settings = <<PROTECTED_SETTINGS { "commandToExecute": "powershell.exe -encodedCommand ${textencodebase64(templatefile("${path.module}/myScript.ps1", var.myModules), "UTF-16LE")}" } PROTECTED_SETTINGS timeouts { create = "2h" } } ``` ### Debug Output/Panic Output ```shell │ Error: Error in function call │ │ on .terraform/path/myfile.tf line 291, in resource "azurerm_virtual_machine_extension" "PsModulesGeneral": │ 291: "commandToExecute": "powershell.exe -encodedCommand ${textencodebase64(templatefile("${path.module}/myScript.ps1", var.myModules), "UTF-16LE")}" │ ├──────────────── │ │ while calling templatefile(path, vars) │ │ path.module is ".terraform/path" │ │ var.myModules is a object │ │ Call to function "templatefile" failed: panic in function implementation: │ can't use ElementIterator on unknown value │ goroutine 7606 [running]: │ runtime/debug.Stack() │ runtime/debug/stack.go:26 +0x5e │ github.com/zclconf/go-cty/cty/function.errorForPanic(...) │ github.com/zclconf/go-cty@v1.15.1-0.20241111215639-63279be090d7/cty/function/error.go:44 │ github.com/zclconf/go-cty/cty/function.Function.Call.func2() │ github.com/zclconf/go-cty@v1.15.1-0.20241111215639-63279be090d7/cty/function/function.go:349 │ +0x9b │ panic({0x3050be0?, 0x3ddadb0?}) │ runtime/panic.go:785 +0x132 │ github.com/zclconf/go-cty/cty.Value.ElementIterator({{{0x3e20e90?, │ 0xc004dab8a0?}}, {0x315d760?, 0x5a112e0?}}) │ github.com/zclconf/go-cty@v1.15.1-0.20241111215639-63279be090d7/cty/value_ops.go:1193 │ +0xd1 │ github.com/zclconf/go-cty/cty.Value.AsValueMap({{{0x3e20e90?, │ 0xc004dab8a0?}}, {0x315d760?, 0x5a112e0?}}) │ github.com/zclconf/go-cty@v1.15.1-0.20241111215639-63279be090d7/cty/value_ops.go:1455 │ +0x99 │ github.com/hashicorp/terraform/internal/lang/funcs.MakeTemplateFileFunc.makeRenderTemplateFunc.func4({0x3e21108, │ 0xc0039cc5a0}, {{{0x3e20e90?, 0xc004dab8a0?}}, {0x315d760?, 0x5a112e0?}}) │ github.com/hashicorp/terraform/internal/lang/funcs/string.go:322 +0xea │ github.com/hashicorp/terraform/internal/lang/funcs.MakeTemplateFileFunc.func3({0xc00beb2980?, │ 0xc004dab8a0?, 0x315d760?}, {{0x3e21598?, 0x5a43160?}}) │ github.com/hashicorp/terraform/internal/lang/funcs/filesystem.go:148 +0x245 │ github.com/zclconf/go-cty/cty/function.Function.Call({0x3e20e90?}, │ {0xc00beb2980, 0x2, 0x2}) │ github.com/zclconf/go-cty@v1.15.1-0.20241111215639-63279be090d7/cty/function/function.go:353 │ +0x6bf │ github.com/hashicorp/hcl/v2/hclsyntax.(*FunctionCallExpr).Value(0xc003df0f00, │ 0xc00a51ff68) │ github.com/hashicorp/hcl/v2@v2.23.0/hclsyntax/expression.go:528 +0x1acf │ github.com/hashicorp/hcl/v2/hclsyntax.(*FunctionCallExpr).Value(0xc003df0ff0, │ 0xc00a51ff68) │ github.com/hashicorp/hcl/v2@v2.23.0/hclsyntax/expression.go:493 +0x1304 │ github.com/hashicorp/hcl/v2/hclsyntax.(*TemplateExpr).Value(0xc003e10a20, │ 0xc00a51ff68) │ github.com/hashicorp/hcl/v2@v2.23.0/hclsyntax/expression_template.go:36 │ +0x14d │ github.com/hashicorp/hcl/v2/hcldec.(*AttrSpec).decode(0xc009e5f140, │ 0xc00722cea8?, {0xc00542e740?, 0x19?, 0x28?}, 0xc00a51ff68) │ github.com/hashicorp/hcl/v2@v2.23.0/hcldec/spec.go:220 +0x1fc │ github.com/hashicorp/hcl/v2/hcldec.ObjectSpec.decode(0xc009e5f0e0, │ 0xc003993e00, {0x0, 0x0, 0x0}, 0xc00a51ff68) │ github.com/hashicorp/hcl/v2@v2.23.0/hcldec/spec.go:94 +0x1f8 │ github.com/hashicorp/hcl/v2/hcldec.decode({0x3e22ad0, 0xc008c65dc0}, {0x0, │ 0x0, 0x0}, 0xc00a51ff68, {0x3e21618, 0xc009e5f0e0}, 0x0) │ github.com/hashicorp/hcl/v2@v2.23.0/hcldec/decode.go:24 +0x10f │ github.com/hashicorp/hcl/v2/hcldec.Decode(...) │ github.com/hashicorp/hcl/v2@v2.23.0/hcldec/public.go:18 │ github.com/hashicorp/terraform/internal/lang.(*Scope).EvalBlock(0xc0095b2c60, │ {0x3e21060, 0xc009679bd0}, 0xc008875bf0) │ github.com/hashicorp/terraform/internal/lang/eval.go:75 +0x207 │ github.com/hashicorp/terraform/internal/terraform.(*BuiltinEvalContext).EvaluateBlock(0xc005a85530?, │ {0x3e21390, 0xc003e838c0}, 0xc008875bf0, {0x0?, 0x0?}, {{{{0x3e20b18, │ 0xc000013bf8}}, {0x315d760, 0x5a112e0}}, ...}) │ github.com/hashicorp/terraform/internal/terraform/eval_context_builtin.go:324 │ +0x145 │ github.com/hashicorp/terraform/internal/terraform.(*NodeValidatableResource).validateResource(0xc005da0458, │ {0x3e48bb8, 0xc0065f7300}) │ github.com/hashicorp/terraform/internal/terraform/node_resource_validate.go:348 │ +0x726 github.com/hashicorp/terraform/internal/terraform.(*NodeValidatableResource).Execute(0xc005da0458, │ {0x3e48bb8, 0xc0065f7300}, 0x0?) │ github.com/hashicorp/terraform/internal/terraform/node_resource_validate.go:56 │ +0xb8 │ github.com/hashicorp/terraform/internal/terraform.(*ContextGraphWalker).Execute(0xc005ffe6e0, │ {0x3e48bb8, 0xc0065f7300}, {0x7f6f24e2eb70, 0xc005da0458}) │ github.com/hashicorp/terraform/internal/terraform/graph_walk_context.go:161 │ +0xb5 │ github.com/hashicorp/terraform/internal/terraform.(*Graph).walk.func1({0x36b4c40, │ 0xc005da0458}) │ github.com/hashicorp/terraform/internal/terraform/graph.go:143 +0x7c3 │ github.com/hashicorp/terraform/internal/dag.(*Walker).walkVertex(0xc002a7a840, │ {0x36b4c40, 0xc005da0458}, 0xc00ab63680) │ github.com/hashicorp/terraform/internal/dag/walk.go:384 +0x2d1 │ created by github.com/hashicorp/terraform/internal/dag.(*Walker).Update in │ goroutine 19 │ github.com/hashicorp/terraform/internal/dag/walk.go:307 +0xfb3 │ . ╵ Failed: Error while executing terraform plan. ``` ### Expected Behaviour This should work as it did in 1.9.8 ### Actual Behaviour Using 1.10.0 with the same TF files, the plan fails immediately. ### Steps to Reproduce _No response_ ### Important Factoids _No response_ ### References _No response_