Conclusion: remove symfony/event-dispatcher v4.1.4

Hi!
Laravel 5.6 return an error when I try to install the package.
All list of error finishing with message:
Conclusion: remove symfony/event-dispatcher v4.1.4
Also I found:
egeloen/google-map 2.0.x-dev requires symfony/event-dispatcher ^2.7|^3.0
But when I try to downgrade my event-dispatcher package to 2.7 or 3.0 I have an error and can't to do that.
Any help? Thx

[kasperhartwich]

I believe it's https://github.com/egeloen/ivory-serializer that requires it and google-map requires the serializer.

But this project is dead: #286

[edwardkarlsson]

Any suggestions on new packages that does about the same thing?

[kasperhartwich]

I only used the time-zone part, so i changed to imelgrat/google-time-zone

[davidsarkany]

#265 Same error