diff --git a/lldb/include/lldb/Interpreter/ScriptedInterface.h b/lldb/include/lldb/Interpreter/ScriptedInterface.h
--- a/lldb/include/lldb/Interpreter/ScriptedInterface.h
+++ b/lldb/include/lldb/Interpreter/ScriptedInterface.h
@@ -31,9 +31,9 @@
                      StructuredData::Generic *script_obj = nullptr) = 0;
 
   template <typename Ret>
-  Ret ErrorWithMessage(llvm::StringRef caller_name, llvm::StringRef error_msg,
-                       Status &error,
-                       uint32_t log_caterogy = LIBLLDB_LOG_PROCESS) {
+  static Ret ErrorWithMessage(llvm::StringRef caller_name,
+                              llvm::StringRef error_msg, Status &error,
+                              uint32_t log_caterogy = LIBLLDB_LOG_PROCESS) {
     LLDB_LOGF(GetLogIfAllCategoriesSet(log_caterogy), "%s ERROR = %s",
               caller_name.data(), error_msg.data());
     error.SetErrorString(llvm::Twine(caller_name + llvm::Twine(" ERROR = ") +
diff --git a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
--- a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
+++ b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
@@ -222,8 +222,8 @@
 size_t ScriptedProcess::DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
                                      Status &error) {
   if (!m_interpreter)
-    return GetInterface().ErrorWithMessage<size_t>(LLVM_PRETTY_FUNCTION,
-                                                   "No interpreter.", error);
+    return ScriptedInterface::ErrorWithMessage<size_t>(
+        LLVM_PRETTY_FUNCTION, "No interpreter.", error);
 
   lldb::DataExtractorSP data_extractor_sp =
       GetInterface().ReadMemoryAtAddress(addr, size, error);
@@ -235,7 +235,7 @@
       0, data_extractor_sp->GetByteSize(), buf, size, GetByteOrder());
 
   if (!bytes_copied || bytes_copied == LLDB_INVALID_OFFSET)
-    return GetInterface().ErrorWithMessage<size_t>(
+    return ScriptedInterface::ErrorWithMessage<size_t>(
         LLVM_PRETTY_FUNCTION, "Failed to copy read memory to buffer.", error);
 
   return size;
@@ -293,7 +293,7 @@
   ScriptLanguage language = m_interpreter->GetLanguage();
 
   if (language != eScriptLanguagePython)
-    return GetInterface().ErrorWithMessage<bool>(
+    return ScriptedInterface::ErrorWithMessage<bool>(
         LLVM_PRETTY_FUNCTION,
         llvm::Twine("ScriptInterpreter language (" +
                     llvm::Twine(m_interpreter->LanguageToString(language)) +
@@ -304,7 +304,7 @@
   StructuredData::DictionarySP thread_info_sp = GetInterface().GetThreadsInfo();
 
   if (!thread_info_sp)
-    return GetInterface().ErrorWithMessage<bool>(
+    return ScriptedInterface::ErrorWithMessage<bool>(
         LLVM_PRETTY_FUNCTION,
         "Couldn't fetch thread list from Scripted Process.", error);
 
@@ -312,13 +312,13 @@
       [this, &old_thread_list, &error,
        &new_thread_list](ConstString key, StructuredData::Object *val) -> bool {
     if (!val)
-      return GetInterface().ErrorWithMessage<bool>(
+      return ScriptedInterface::ErrorWithMessage<bool>(
           LLVM_PRETTY_FUNCTION, "Invalid thread info object", error);
 
     lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
     if (!llvm::to_integer(key.AsCString(), tid))
-      return GetInterface().ErrorWithMessage<bool>(LLVM_PRETTY_FUNCTION,
-                                                   "Invalid thread id", error);
+      return ScriptedInterface::ErrorWithMessage<bool>(
+          LLVM_PRETTY_FUNCTION, "Invalid thread id", error);
 
     if (ThreadSP thread_sp =
             old_thread_list.FindThreadByID(tid, false /*=can_update*/)) {
@@ -332,12 +332,12 @@
         ScriptedThread::Create(*this, error, val->GetAsGeneric());
 
     if (!thread_sp || error.Fail())
-      return GetInterface().ErrorWithMessage<bool>(LLVM_PRETTY_FUNCTION,
-                                                   error.AsCString(), error);
+      return ScriptedInterface::ErrorWithMessage<bool>(
+          LLVM_PRETTY_FUNCTION, error.AsCString(), error);
 
     RegisterContextSP reg_ctx_sp = thread_sp->GetRegisterContext();
     if (!reg_ctx_sp)
-      return GetInterface().ErrorWithMessage<bool>(
+      return ScriptedInterface::ErrorWithMessage<bool>(
           LLVM_PRETTY_FUNCTION,
           llvm::Twine("Invalid Register Context for thread " +
                       llvm::Twine(key.AsCString()))
diff --git a/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp b/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
--- a/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
+++ b/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
@@ -41,18 +41,16 @@
   auto scripted_thread_interface =
       process.GetInterface().CreateScriptedThreadInterface();
   if (!scripted_thread_interface)
-    return process.GetInterface()
-        .ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
-            LLVM_PRETTY_FUNCTION, "Failed to create scripted thread interface.",
-            error);
+    return ScriptedInterface::ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
+        LLVM_PRETTY_FUNCTION, "Failed to create scripted thread interface.",
+        error);
 
   llvm::Optional<std::string> class_name =
       process.GetInterface().GetScriptedThreadPluginName();
   if (!class_name || class_name->empty())
-    return process.GetInterface()
-        .ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
-            LLVM_PRETTY_FUNCTION, "Failed to get scripted thread class name.",
-            error);
+    return ScriptedInterface::ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
+        LLVM_PRETTY_FUNCTION, "Failed to get scripted thread class name.",
+        error);
 
   ExecutionContext exe_ctx(process);
   StructuredData::GenericSP owned_script_object_sp =
@@ -61,13 +59,11 @@
           process.m_scripted_process_info.GetArgsSP(), script_object);
 
   if (!owned_script_object_sp)
-    return process.GetInterface()
-        .ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
-            LLVM_PRETTY_FUNCTION, "Failed to create script object", error);
+    return ScriptedInterface::ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
+        LLVM_PRETTY_FUNCTION, "Failed to create script object", error);
   if (!owned_script_object_sp->IsValid())
-    return process.GetInterface()
-        .ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
-            LLVM_PRETTY_FUNCTION, "Created script object is invalid", error);
+    return ScriptedInterface::ErrorWithMessage<std::shared_ptr<ScriptedThread>>(
+        LLVM_PRETTY_FUNCTION, "Created script object is invalid", error);
 
   lldb::tid_t tid = scripted_thread_interface->GetThreadID();