qgis - SLD parsing fail on GeoServer

I created a custom style on QGis and saved as SLD file. When I added to GeoServer, after validation it, I got an errors about parsing.

Here is the error message below:

Parsing failed for Filter: java.lang.RuntimeException: Unable to find function Literal
line 26: cvc-complex-type.2.4.a: Invalid content was found starting with element 'ogc:Filter'. One of '{"http://www.opengis.net/ogc":expression}' is expected.
line 27: cvc-complex-type.2.4.a: Invalid content was found starting with element 'ogc:Literal'. One of '{"http://www.opengis.net/ogc":spatialOps, "http://www.opengis.net/ogc":comparisonOps, "http://www.opengis.net/ogc":logicOps, "http://www.opengis.net/ogc":_Id}' is expected.



  
    Some_Name

    
      Some_Name
      
        
          Single symbol
          
            
              
                
                  

                    line
                    
                      #ff0000
                    
                    
                      #ff0000
                    
                  
                  3
                

                
                  
                    1.2
                  
                
              
            
          
          
            

              #ff0000
              0.26
              bevel
              square
            
            1
          
          
            
              #ff0000

              0.26
              bevel
              square
            
            -0.6
          
        
      
    
  

How can I resolve the parsing issue?