Upgrading NTLM Webservice call from 5.15 to 5.18 Java Error - constructor NTLMScheme in class NTLMScheme cannot be applied to given types;

I am trying to upgrade my application from 5.15 to 5.18. We are using the NTLM webservice (https://github.com/chadevansMX/WebService_NTLM). I've tried to contact the developer on Github but he seems to be inactive. Is there anybody that could help me out with the following java error?

Buildfile: C:\Users\Sande\Documents\REV'IT! Middleware-ACCP\deployment\build_core.xml

compile:
    [javac] Compiling 558 source files to C:\Users\Sande\Documents\REV'IT! Middleware-ACCP\deployment\run\bin
    [javac] C:\Users\Sande\Documents\REV'IT! Middleware-ACCP\javasource\webservice_ntlm\actions\NTLM_WebService.java:108: error: constructor NTLMScheme in class NTLMScheme cannot be applied to given types;
    [javac]         NTLMScheme ntlmScheme = new NTLMScheme();
    [javac]                                 ^
    [javac]   required: NTLMEngine
    [javac]   found: no arguments
    [javac]   reason: actual and formal argument lists differ in length
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: C:\Users\Sande\Documents\REV'IT! Middleware-ACCP\javasource\com\mendix\core\Core.java uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error



BUILD FAILED
C:\Users\Sande\Documents\REV'IT! Middleware-ACCP\deployment\build_core.xml:28: Compile failed; see the compiler error output for details.

Total time: 4 seconds