Help in using image files in http server

I can not figure out, what I do wrong
my prolog:
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my program:
:- use_module(library(http/thread_httpd)).
:- use_module(library(http/http_dispatch)).
:- use_module(library(http/http_error)).
:- use_module(library(http/html_write)).
:- use_module(library(http/http_path)).
:- use_module(library(http/http_files)).


:- multifile http:location/3.
:- dynamic   http:location/3.
:- multifile user:file_search_path/2.
:- dynamic 	user:file_search_path/2.

file_search_path('images', '/Users/joseffrydl/Desktop/proKatu/praveTed/images').
:- http_handler('/', display_main_page, []).
:- http_handler(images(.), serve_files_in_directory('images'),
		[prefix, priority(-100)]).

port(8881).

start :-
    port(Port),server(Port).


stop :-
    port(Port),
    http_stop_server(Port, []).


server(Port) :-
        http_server(http_dispatch, [port(Port)]).

display_main_page(_Request) :-  phrase(intro,TokenizedHtml,[]),
    							format('Content-type: text/html~n~n'), 
								print_html(TokenizedHtml).
	

intro -->
    html([p(ol([li('select a path'),
            li('this is test')
            
           ])),
          \sep,
          img(src='images/empilotmainlogo.png'), 'png after'
    
         ]).


my result:
http_alias `images' does not exist
In:
[23] throw(error(...,_G263))
[20] http_path:expand_location(images('.'),/,_G280,[]) at /opt/local/lib/swipl-6.6.1/library/http/http_path.pl:191
[19] http_path:absolute_location(images('.'),/,_G300,[]) at /opt/local/lib/swipl-6.6.1/library/http/http_path.pl:177
[18] http_path:http_absolute_location(images('.'),_G319,[]) at /opt/local/lib/swipl-6.6.1/library/http/http_path.pl:170
[17] http_dispatch:prefix_handler(_G337,user: ...,[...]) at /opt/local/lib/swipl-6.6.1/library/http/http_dispatch.pl:816
[16] '$bags':findall_loop(_G360,http_dispatch: ...,_G362,[]) at /opt/local/lib/swipl-6.6.1/boot/bags.pl:78
[15] setup_call_catcher_cleanup('$bags':'$new_findall_bag','$bags': ...,_G380,'$bags':'$destroy_findall_bag') at /opt/local/lib/swipl-6.6.1/boot/init.pl:310
[11] http_dispatch:path_tree(_G405) at /opt/local/lib/swipl-6.6.1/library/http/http_dispatch.pl:806
[10] http_dispatch:find_handler(/,_G421,_G422) at /opt/local/lib/swipl-6.6.1/library/http/http_dispatch.pl:510
[9] http_dispatch:http_dispatch([...|...]) at /opt/local/lib/swipl-6.6.1/library/http/http_dispatch.pl:317
[8] httpd_wrapper:call_handler(user:http_dispatch,1,[...|...]) at /opt/local/lib/swipl-6.6.1/library/http/http_wrapper.pl:259
[7] catch(httpd_wrapper: ...,error(...,...),httpd_wrapper:true) at /opt/local/lib/swipl-6.6.1/boot/init.pl:274
[6] httpd_wrapper:handler_with_output_to(user:http_dispatch,1,[...|...],current_output,error(...,...)) at /opt/local/lib/swipl-6.6.1/library/http/http_wrapper.pl:239
[5] httpd_wrapper:handler_with_output_to(user:http_dispatch,1,[...|...],<stream>(0x457e60),error(...,...)) at /opt/local/lib/swipl-6.6.1/library/http/http_wrapper.pl:249
[4] httpd_wrapper:http_wrapper(user:http_dispatch,<stream>(0x456aa0),<stream>(0x456b30),_G560,[...|...]) at /opt/local/lib/swipl-6.6.1/library/http/http_wrapper.pl:89
[3] thread_httpd:http_process(user:http_dispatch,<stream>(0x456aa0),<stream>(0x456b30),[...|...]) at /opt/local/lib/swipl-6.6.1/library/http/thread_httpd.pl:551
[2] catch(thread_httpd: ...,_G604,thread_httpd:true) at /opt/local/lib/swipl-6.6.1/boot/init.pl:274
[1] thread_httpd:http_worker([...|...]) at /opt/local/lib/swipl-6.6.1/library/http/thread_httpd.pl:382
[0] <meta call>

Thanks Josef Frydl
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