fix for late compilation errors on untyped input

Signed-off-by: chcurran <82187351+carlitosan@users.noreply.github.com>

Gems/ScriptCanvas/Code/Include/ScriptCanvas/Grammar/AbstractCodeModel.cpp

@@ -4320,6 +4320,12 @@ namespace ScriptCanvas
         {
             AZ_Assert(execution->GetSymbol() != Symbol::FunctionDefinition, "Function definition input is not handled in AbstractCodeModel::ParseInputDatum");
 
+            if (!input.GetDataType().IsValid())
+            {
+                AddError(nullptr, aznew Internal::ParseError(execution->GetNodeId(), ParseErrors::InvalidDataTypeInInput));
+                return;
+            }
+
             auto nodes = execution->GetId().m_node->GetConnectedNodes(input);
             if (nodes.empty())
             {

Gems/ScriptCanvas/Code/Include/ScriptCanvas/Results/ErrorText.h

@@ -41,6 +41,7 @@ namespace ScriptCanvas
         constexpr const char* InactiveGraph = "This graph defines no functions, it is never activated, and will never execute. Add a Start node or connect an event handler or define functions.";
         constexpr const char* InfiniteLoopWritingToVariable = "infinite loop when writing to variable";
         constexpr const char* InfiniteSelfActivationLoop = "infinite loop when activating the entity that owns this graph";
+        constexpr const char* InvalidDataTypeInInput = "invalid data type in input slot";
         constexpr const char* MetaDataNeedsTupleTypeIdForEventCall = "Meta data needs an AzTypeId for Tuple if an EBus call returns multiple types to ScriptCanvas";
         constexpr const char* MetaDataRequiredForEventCall = "Meta data is required for ACM node that is an EBus call";
         constexpr const char* MissingFalseExecutionSlotOnIf = "A 'False' Execution output slot is required in an If branch node";