Could not find or load spatialindex_c-64.dll

Hi! I generated .exe file and probably I have a problem with rtree library because when I try to run my .exe file it crashes with error:

in exec_module
exec(bytecode,module.dict)
File “rtree\core.py”,line 126, in
OSError: could not find or load spatialindex_c-64.dll
[16436] Failed to execute script main

I do not know what to do. If someone has any ideas or want to help I can give my code and .spec file

Thanks for responses!