Reference to non-existent field 'DisplayName'

📊 Plotly Python
1

I have 2 heatmap subplots (3 by 150 matrix on each one) with 90 deg rotation for the XTickLabel and got this warning and subsequent error:

response = fig2plotly(h1, ‘filename’, ‘test_plotly’);
Reference to non-existent field ‘DisplayName’.
We had trouble parsing the image object.
This trace might not render properly.

Reference to non-existent field ‘DisplayName’.
We had trouble parsing the image object.
This trace might not render properly.

Error using urlreadwrite (line 58)
Could not POST to URL.

Error in urlread (line 47)
[s,status] = urlreadwrite(mfilename,catchErrors,url,varargin{:});

Error in makecall (line 27)
resp = urlread(url, ‘Post’, payload);

Error in plotly (line 28)
response = makecall(args, origin, structargs);

Error in plotlyfig/plotly (line 432)
response = plotly(obj.data, args);

Error in fig2plotly (line 49)
p.plotly;

What is the DisplayName option? Any help/suggestion will be appreciated!