making sure the issue comes from GDUnit addon folder

addons/gdUnit4/src/core/report/GdUnitReport.gd

@@ -0,0 +1,74 @@
+class_name GdUnitReport
+extends Resource
+
+# report type
+enum {
+	SUCCESS,
+	WARN,
+	FAILURE,
+	ORPHAN,
+	TERMINATED,
+	INTERUPTED,
+	ABORT,
+	SKIPPED,
+}
+
+var _type :int
+var _line_number :int
+var _message :String
+
+
+func create(p_type :int, p_line_number :int, p_message :String) -> GdUnitReport:
+	_type = p_type
+	_line_number = p_line_number
+	_message = p_message
+	return self
+
+
+func type() -> int:
+	return _type
+
+
+func line_number() -> int:
+	return _line_number
+
+
+func message() -> String:
+	return _message
+
+
+func is_skipped() -> bool:
+	return _type == SKIPPED
+
+
+func is_warning() -> bool:
+	return _type == WARN
+
+
+func is_failure() -> bool:
+	return _type == FAILURE
+
+
+func is_error() -> bool:
+	return _type == TERMINATED or _type == INTERUPTED or _type == ABORT
+
+
+func _to_string() -> String:
+	if _line_number == -1:
+		return "[color=green]line [/color][color=aqua]<n/a>:[/color] %s" % [_message]
+	return "[color=green]line [/color][color=aqua]%d:[/color] %s" % [_line_number, _message]
+
+
+func serialize() -> Dictionary:
+	return {
+		"type"        :_type,
+		"line_number" :_line_number,
+		"message"     :_message
+	}
+
+
+func deserialize(serialized :Dictionary) -> GdUnitReport:
+	_type        = serialized["type"]
+	_line_number = serialized["line_number"]
+	_message     = serialized["message"]
+	return self