Hector Ricardo Mendez Sordia : I believe there is some compatibility issue which generally throw this error.
Please refer the screenshot from Analytics guide which clearly mentions the compatibility matrix of ThingWorx version and Analytics Extension.
Just to add latest release of ThingWorx 7.4 with Analytics extension 7.4 is also available.
So please verify the compatible versions in case there is any mismatch.
I've checked the case knowledge base and related articles, it's true that this problem can be reproduced. The extension 52.2 can be imported on versions between 7.2.4 to 7.2.7, but fails in 7.2.8 and 7.3.x versions. So you might need to switch to supported 7.2 versions or upgrade to 7.4.
Here I'll attach the article where I get this information for your reference. CS257329