Version info
Minecraft 1.18.2
Portable Tanks 1.1.6

Is not compatible with the latest version of SuperMartijn642's Core Lib, version 1.1.0

Can confirm this issue.
Edit: On 1.19.2 & 1.18.2

Is there a solution to this?

Hello, (It was translated into English with Google Translate.)

@SuperMartijn642

this answer is enough for me. Just knowing that you guys are working on it and that there will be an upgrade at some point is enough for me. Thank you for your work and time (and for the quick reply). This is not always a matter of course. 👍

See You. :) :) :)

Hello, (It was translated into English with Google Translate.)

i get the same error messages as described above. For me the Minecraft version is 1.16.5. It wants SuperMartijn642's Core Lib v1.1.1

See You.

Portable Tanks' dependency on my core library is simply set to only accept versions below 1.1.0. This is intentional as version 1.1.0 of my core library has many breaking changes.
I help @Dremoline with the coding part of Portable Tanks, so we have to find a time where we're both available. As we are both quite busy, updating takes a bit.

Hey, the issue is resolved in the new update we just released. Let us know if you encounter more problems.