I am developing a system in C# for a customer who needs to read order numbers from scanned PDF documents. The customer intends to purchase a pro key for the OCR API, but I am using a free key to develop and test the system.
The system worked well for several days, but then all requests started to fail with a variety of error messages. The most recent erro is “Error:E570: Send only one file or url per request,details:Unexpected field”.
I have not exceeded the sending limits and I have sent test requests with your C# sample code using PDF files and images which previously worked perfectly, but all have failed.
I have not been able to continue with the development of the system, so I will need to use another OCR system unless I can find a solution to the problem. I would therefore apprecaite any help to find the cause of the problem. I have included further details of one of the errors below.
MulterError: Unexpected field
at wrappedFileFilter (c:\1ftp\releasefolder\proxy1\node_modules\multer\index.js:41:19)
at Multipart. (c:\1ftp\releasefolder\proxy1\node_modules\multer\lib\make-middleware.js:183:7)
at Multipart.emit (node:events:517:28)
at HeaderParser.cb (c:\1ftp\releasefolder\proxy1\node_modules\busboy\lib\types\multipart.js:358:14)
at HeaderParser.push (c:\1ftp\releasefolder\proxy1\node_modules\busboy\lib\types\multipart.js:162:20)
at SBMH.ssCb [as _cb] (c:\1ftp\releasefolder\proxy1\node_modules\busboy\lib\types\multipart.js:394:37)
at feed (c:\1ftp\releasefolder\proxy1\node_modules\streamsearch\lib\sbmh.js:200:10)
at SBMH.push (c:\1ftp\releasefolder\proxy1\node_modules\streamsearch\lib\sbmh.js:104:16)
at Multipart._write (c:\1ftp\releasefolder\proxy1\node_modules\busboy\lib\types\multipart.js:567:19)
at writeOrBuffer (node:internal/streams/writable:392:12)