Both me and my friend experience this problem in my other friends aternos server, works in survival not in multiplayer. Not sure if we downloaded the same thing but please let me know.

Please follow the template so we can actually have useful or any information

When i attemp to upload my logs it says don't support the file type

Try renaming the log to "log.txt".
If GitHub still won't let you upload the file then paste it into the issue in a <details><summary>log</summary> PASTE HERE </details> "spoiler". Using a paste service is also possible, but then the log will expire after a while, which is not nice.

can we close this it dosnt look like he going to provide his log files.