TypeError('expected ' + str(self.expected_type)) > TypeError: expected <class 'openpyxl.chart.axis.SeriesAxis'>
*Created originally on Bitbucket by [pratyuma (Pratyuma)](https://bitbucket.org/%7B98605376-5092-4962-b86b-e7192e5cf624%7D/)* Hi, I am not able to load the workbook, getting the TypeError (see attached image). This works fine with openpyxl version 2.4.1a1 however when I try to upgrade it to version 2.5.2 it throws the typeerror. Thanks in advance. Pratyuma *Attachments:* [openpyxl_error_explore](/uploads/936fc50e0a39d1c94102148786f01bb6/openpyxl_error_explore.gif)
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