The screenshot shows an output error caused by a 'post to resource' query. This query has run happily for at least two months and now does not complete.
The obscured credentials enable a connection to a public Supabase storage bucket. fileInput1 is a file browser box and its value is according to the structure 'filename', 'filetype', 'base64Data'.
The format of the data is only visible now because I have the error shown, but, as I say, the query has been happy and successful until now, both in Retool and Supabase. It appears as though Retool has suddenly started to include metadata in the output and that Supabase is not expecting this class of information and has no place to put it.
As always, any and all suggestions are very welcome.