NullPointerException at DynamicClassLoader

[aaaaaa2493]

https://stepik.org/submissions/625154/338694599
https://stepik.org/submissions/625154/338694652

Unexpected error in test #1

We have recorded this bug and will fix it soon.

Submitted via IDE

OS Linux
Java 11.0.8
Vendor N/A
Testing library version 7.2

java.lang.NullPointerException
    at org.hyperskill.hstest.dynamic.DynamicClassLoader.<init>(DynamicClassLoader.java:18)
    at org.hyperskill.hstest.testing.TestedProgram.<init>(TestedProgram.java:103)
    at org.hyperskill.hstest.dynamic.input.DynamicTesting.lambda$toDynamicTesting$0(DynamicTesting.java:124)
    at org.hyperskill.hstest.testing.runner.AsyncMainMethodRunner.lambda$runMain$0(AsyncMainMethodRunner.java:31)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)