Media Error upload when publishing a post

Hi,

I have using wordpress to create a simple blog containing just pictures and text. I am not using any coding whatsoever.

The last 4 times when I have tried to publish a post the upload bar has got all the way to the end but then the following message appears
“Media error.
An error occurred while uploading media: write error: ssl=0xad364400: I/O er…”
Then string of characters after the = sign varies, another time it was “0x91511200”.

I have tried reinstalling the app and I have also these occurrences posted 6 similar posts successfully.

Does anyone have any suggestions?

Please bare in mind I have limited knowledge of wordpress.

Thank you.