ufbt Errors

[SYOP200]

Description

I have been trying to install the latest version of uFBT on my Ubuntu Linux build.
(FYI, my system is updated to the latest version of Ubuntu)

What I've tried

So far, I have passed by at least 4 errors about the applications.fam folder missing. Eventually I found it but when I ran ufbt in it, it responded with:

fbt: warning: Failed parsing manifest '/home/sysop/.ufbt/current/scripts/ufbt/project_template/app_template/application.fam' : Invalid appid '@FBT_APPID@'. Must match regex 're.compile('^[a-z0-9_]+$')'
LoadAppManifest, line 130, in file "/home/sysop/.ufbt/current/scripts/fbt_tools/fbt_apps.py"
scons: *** [phony_launch] More than one app is runnable: . Please specify an app with APPID=...

So, I tried to reinstall all of the missing packages. Then when I ran ufbt again, I received:

fbt: warning: Failed parsing manifest '/home/sysop/.ufbt/current/scripts/ufbt/project_template/app_template/application.fam' : Invalid appid '@FBT_APPID@'. Must match regex 're.compile('^[a-z0-9_]+$')'
LoadAppManifest, line 130, in file "/home/sysop/.ufbt/current/scripts/fbt_tools/fbt_apps.py"
scons: *** No targets specified and no Default() targets found.  Stop.

The previous errors I do not have a copy of, however they were all errors about missing packages. Yet, I am still stuck on this error.

I have been looking at other issues with the same problem, but I have tried the suggested ways to fix it, and I am still stuck.

Can you explain a response to me a simple as you can, I am not as advanced at this topic, Thank you!