Anybody else got this error with their Mammoth app?

https://files.mastodon.social/media_attachments/files/111/176/332/619/469/432/original/497c6f320ee0a539.png 

 I find Tooot is nice for Android https://play.google.com/store/apps/details?id=com.xmflsct.app.tooot

https://files.mastodon.social/media_attachments/files/111/177/012/540/160/315/original/4acd4c971d310785.png

https://files.mastodon.social/media_attachments/files/111/177/012/494/924/363/original/3a75085dbd6f1f85.png

https://files.mastodon.social/media_attachments/files/111/177/012/475/944/316/original/731ad4cbc6a84946.png