Test your WordPress installation by uploading a new file. Hopefully, it will be fixed by now. If not then you have to fix it at the server end by either yourself as discussed in the next method or have to ask your server administrator to fix it. (Cheap hosting usually do not offer higher memory limits but it’s worth reaching out.)
3. Set Server PHP Configuration
If this is your personal server and you can access it via WHM then follow this method.
- From the WHM search panel, navigate to the PHP configuration editor.
- Select the PHP version you are primarily using in the option menu.
- Find the upload value limit in settings and change to your desired limit (128Mb is a good option).
- Save & Restart the server and the issue will be fixed.
Hopefully, this issue is fixed if not consider getting managed hosting or hiring someone to do it on your behalf is the best option.