diff --git a/src/Dropzone.tsx b/src/Dropzone.tsx
index da29a80..64cbd82 100644
--- a/src/Dropzone.tsx
+++ b/src/Dropzone.tsx
@@ -496,12 +496,17 @@ class Dropzone extends React.Component<IDropzoneProps, { active: boolean; dragge
 
   uploadFile = async (fileWithMeta: IFileWithMeta) => {
     const { getUploadParams } = this.props
+
     if (!getUploadParams) return
     let params: IUploadParams | null = null
     try {
       params = await getUploadParams(fileWithMeta)
     } catch (e) {
-      console.error('Error Upload Params', e.stack)
+      if(e instanceof Error) {
+        console.error('Error Upload Params', e.stack)
+      } else {
+        console.error('Cannot get params out of getUploadParams due to promise error')
+      }
     }
     if (params === null) return
     const { url, method = 'POST', body, fields = {}, headers = {}, meta: extraMeta = {} } = params