Game Crashing when launched : non [a-z0-9/._-] character in path of location

Status
Works as designed
Issue description

When trying to load minecraft through the launcher the game crashes and displays this message:

 

The game crashed whilst rendering overlay
Error: net.minecraft.util.ResourceLocationException: Non [a-z0-9/._-] character in path of location: sword_art_online_beta:blocks/aincrad portal

I'm unsure how to fix this, it runs fine without the dimension mod element.

It could just be a mistake on my part as i have only recently started using mcreator

Thanks

Issue comments

Texture "aincrad portal.png" contains whitespace in the name which is not allowed in 1.14.4. Rename the texture and reselect it on all places where aincrad portal.png is used. Do the same for any other textures that have non [a-z0-9/._-] characters in their file names.

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