Issue with loading URLs with custom quantities

When the URL contains a path to a single custom quantity, the GUI crashes. For example: https://nomad-lab.eu/prod/v1/staging/gui/search/ai-toolkit?data.category#nomad_aitoolkit.schema.AIToolkitNotebook=advanced_tutorial

When the URL contains multiple custom quantities, the keycloak redirect no longer works. For example: https://nomad-lab.eu/prod/v1/staging/gui/search/ai-toolkit?data.category#nomad_aitoolkit.schema.AIToolkitNotebook=advanced_tutorial&data.category#nomad_aitoolkit.schema.AIToolkitNotebook=beginner_tutorial