Unable to import mpp file

C:\Users\user1\ganttproject.log

GanttProject 3.2.3247
Settings file:
location: C:\Users\user1.ganttproject
size:5659
is readable: true
java.class.path: eclipsito.jar;C:\Program Files (x86)\GanttProject-3.2
java.home: C:\Program Files (x86)\GanttProject-3.2\runtime
java.ext.dirs: null
java.io.tmpdir: C:\Users\user1\AppData\Local\Temp
java.runtime.version: 11.0.13+8-LTS
java.vendor: BellSoft
java.vm.name: OpenJDK 64-Bit Server VM
java.vm.vendor: BellSoft
java.vm.version: 11.0.13+8-LTS
os.arch: amd64
os.name: Windows 10
os.version: 10.0
sun.java.command: com.bardsoftware.eclipsito.Launch --verbosity 1 --version-dirs plugins;~/.ganttproject.d/updates --app net.sourceforge.ganttproject.GanttProject
user.country: US
user.dir: C:\Program Files (x86)\GanttProject-3.2
user.home: C:\Users\user1
user.language: en
user.timezone: America/New_York

Feb 16, 2023 3:36:21 PM biz.ganttproject.LoggerImpl debug
FINE: Creating main frame…
Feb 16, 2023 3:36:21 PM biz.ganttproject.LoggerImpl debug
FINE: 1. loading look’n’feels
Feb 16, 2023 3:36:21 PM biz.ganttproject.LoggerImpl debug
FINE: 2. loading options
Feb 16, 2023 3:36:21 PM biz.ganttproject.LoggerImpl debug
FINE: 3. creating menus…
Feb 16, 2023 3:36:22 PM biz.ganttproject.LoggerImpl debug
FINE: 4. creating views…
Feb 16, 2023 3:36:22 PM biz.ganttproject.LoggerImpl debug
FINE: 5. calculating size and packing…
Feb 16, 2023 3:36:22 PM biz.ganttproject.LoggerImpl debug
FINE: 6. changing language …
Feb 16, 2023 3:36:22 PM biz.ganttproject.LoggerImpl debug
FINE: 7. first attempt to restore bounds
Feb 16, 2023 3:36:22 PM biz.ganttproject.LoggerImpl debug
FINE: 8. finalizing…
Feb 16, 2023 3:36:23 PM net.sourceforge.ganttproject.GPLogger log
INFO: Deleting old auto-save files
ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console…
Feb 16, 2023 3:36:34 PM net.sourceforge.ganttproject.importer.ImporterBase reportErrors
INFO: Some tasks (1 out of 3) have changed their start dates. See the details below.

What does it mean?
Feb 16, 2023 3:36:34 PM net.sourceforge.ganttproject.importer.ImporterBase reportErrors
WARNING: Task 5. Senior Management Oversight: was 1/30/23, 12:00 AM, now 2/15/23, 12:00 AM

What do you mean as “unable”? As far as I understand from the logs it imported successfully with some changes in the task dates, which may be inevitable in some cases.

Anyway, please share the MPP file if you believe that there are any issues.