Old hyperlinks returning invalid URL error

[CoreyBlock1]

Hello,

I used the Collector app to initially gather data in the field, including taking a picture of certain properties (only the ones in red on the map). For a while the links to the photos displayed perfectly in the pop-up, online, on arcpro, and on story maps. Now I receive the following:

{
  "error" : 
  {
    "code" : 400, 
    "message" : "Invalid URL", 
    "details" : [
      "Invalid URL"
    ]
  }
}

Map is here:

https://wcpagis.maps.arcgis.com/home/webmap/viewer.html?webmap=08687b991b2041388d9b832923abe77b

Any thoughts?!

[BjornSvensson]

The (broken) photo link is coming from the PHOTO field in the "Monessen_Blight_ORIGINAL" service where they are hardcoded to a service called "Monessen_Blight_Parcels" that doesn't exist (at least not any longer), e.g for example:
https://services.arcgis.com/ovPvGwAAJ4YassIM/arcgis/rest/services/Monessen_Blight_Parcels/FeatureSer...

[CoreyBlock1]

Any idea on how that would happen? Would that happen if I deleted the original map (because someone had made a million copies and I couldn't tell)? I have copies of layers that all use these link-do the files still exist somewhere, can I retrieve them so they can be linked to another way?

Thanks for helping!