Some pathway visualizations fail to load (502: Bad gateway)

[khanspers]

Using the example data with default params, when selecting certain pathways (WP) from the results list the WikiPathways plot fails to load for some of the pathways, with an error:

502: Bad Gateway (nginx)

The odd thing is that some pathways that fails from ORA results load just fine from GSEA results from the same run. For example, "spinal cord injury" gives the error for ORA, but not for GSEA. Other pathways give errors for both, for example "PI3K-Akt signaling pathway".