Kdevelop parser just... stopped doing anything

I'm fairly new to programming in general, and very new to Kdevelop. Yesterd=
ay I installed Kdevelop and started working on a simple C++ program and eve=
rything was working wonderfully. Today, I booted up my PC and opened Kdevel=
op to continue working on my code and the parser (I think? I'm not really f=
amiliar with how the IDE works) just would not do anything. No completion, =
no variable highlighting, no error messages. Nothing. I didn't change any s=
ettings before the problem occurred, I just closed Kdevelop (which was work=
ing at the time), shut down my PC, and then rebooted it the next morning an=
d re-opened the program (which was then no longer working). My OS is Lubunt=
u 22.10, Kdevelop version is "5.9.220801 (22.08.1)", I'm using GCC version =
"Ubuntu 12.2.0-3ubuntu1", and Cmake version is 3.24.2.

I've only been able to find two suggestions online for fixing this problem.=
 The first was to set the C++ version to C++14 in the parser settings for t=
he project. I tried every available standard, none fixed the problem. The o=
ther possible solution I found was to switch from the Cmake Project Manager=
 plugin to the Generic Project Manager, but I looked through every menu I c=
ould find in Kdevelop and could not find any option to switch the project m=
anager. I tried simply disabling the Cmake project Manager while leaving th=
e Generic Project Manager plugin enabled, but this just gave me an error me=
ssage saying that the Cmake Project Manager couldn't load my project. Some =
other things I tried on my own were to reinstall everything (build-essentia=
l, kdevelop, cmake, gcc specifically), and to install and use clang instead=
 of gcc, and of course just rebooting my system again. These didn't help.

I know there's probably some sort of log or config file that would be usefu=
l to include here, but I don't know what, so please let me know if I need t=
o send anything like that. Also, I am not subscribed to the mailing list, s=
o please CC me in replies to this message. Thank you