# Known issues & limitations

Issue or limitationDescription
Errors are shown when initializing Plotly components.During initialization, Plotly components can trigger the following error in the log:
ERROR TypeError: ctx.value is undefined
The errors can be ignored.
MATLAB: Plotly components may be emptied when switching forms.If a Plotly component in a nested form has only one plot (one line, one set of bars etc.), the plot may be emptied if the user switches forms and the plot was not updated.
MATLAB: portal and file cache modes only support base64 file upload/download.Files can be uploaded to the portal, or included in the submission data as a base64 encoded string. Due to limitations of the MATLAB Production Server, the first option can only be supported with a Redis cache.