I'm trying to do a simple conversion of a polygon to vertices and I get an error that says:

AttributeError: 'QgsProcessingProvider' object has no attribute 'isSupportedOutputValue' Traceback (most recent call last): File "C:/PROGRA~1/QGIS3~1.6/apps/qgis/./python/plugins\processing\gui\AlgorithmDialog.py", line 180, in runAlgorithm

parameters = self.getParameterValues() File "C:/PROGRA~1/QGIS3~1.6/apps/qgis/./python/plugins\processing\gui\AlgorithmDialog.py", line 168, in getParameterValues ok, error = self.algorithm().provider().isSupportedOutputValue(value, param, context) AttributeError: 'QgsProcessingProvider' object has no attribute 'isSupportedOutputValue'

Python version: 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)] QGIS version: 3.6.0-Noosa Noosa, 58734527ab

Does anyone have an idea on what's causing this issue?

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