Upload image error

[tinymouse]

Can anyone help me with the upload image issue ?
Is there a support link for splintertal ?

Image upload : Error: 400

Form console view in browser:
app.201c5ba829956b895212.js?undefined:266856 POST https://images.hive.blog/hs/eyJzaWduZWRfbWVzc2FnZSI6eyJ0eXBlIjoicG9zdGluZyIsImFwcCI6ImV3ZCJ9LCJhdXRob3JzIjpbInRpbnltb3VzZSJdLCJ0aW1lc3RhbXAiOjE2Mjk4ODkxOTksInNpZ25hdHVyZXMiOlsiMWY2OTQ0NGRiYzA1MGMwNGM0Y2YzZTI5MzBiNTY4MTI3ODA4NzAxNTY5ZDZhYWY1MWI3NWM3N2Y0MzE4YzU4ZDIyNWNkMTgyMDE4NjZmM2Y4NDNhYWI3MTFiOTc4NDVhODA1NDRhM2ZmODMxMzVlN2Y0MzY3NzY2ZjY5ZWQyOTc5OSJdfQ.. 400

app.201c5ba829956b895212.js?undefined:266856 400 "{"error":{"name":"invalid_signature"}}"

app.201c5ba829956b895212.js?undefined:266856 upload_error3 400

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