SA-MP map to MTA problem

[Intent]

Hello. So i convert some SA-MP map with https://www.convertffs.com/. I use only pwn files and in the converter SA-MP createobject - MTA1.0 object.   I have an issue because some object  like floor and wall don't load. I'm thinking is it custom texture or what? i don't know.

Here is a picture abaut this: https://imgur.com/a/3xUOv3y 

Error code: ERORR: Bad 'model' id specified in <object>  (line 1676)

[5150]

some SAMP objects arent compatible in MTA, it may be you tried to convert a samp-only object