Fix dependency issue and interactive crash

[freddyheppell]

• Downgrade urllib to 1.25.9, pip complains it can't resolve dependencies on 1.26.5

ERROR: Cannot install requests==2.23.0 and urllib3==1.26.5 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested urllib3==1.26.5
    requests 2.23.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1

• Fix interactive export to call placeholder export_namespaces function instead of export_media as this causes a crash