diff --git a/assets/themes/mapcomplete-changes/mapcomplete-changes.json b/assets/themes/mapcomplete-changes/mapcomplete-changes.json
index 7772c9691..c3608b448 100644
--- a/assets/themes/mapcomplete-changes/mapcomplete-changes.json
+++ b/assets/themes/mapcomplete-changes/mapcomplete-changes.json
@@ -565,6 +565,10 @@
                     "if": "theme=rainbow_crossings",
                     "then": "./assets/themes/rainbow_crossings/logo.svg"
                   },
+                  {
+                    "if": "theme=sauna",
+                    "then": "./assets/layers/sauna/sauna.svg"
+                  },
                   {
                     "if": "theme=scouting",
                     "then": "./assets/layers/scouting_group/scouting.svg"
diff --git a/src/Logic/DetermineTheme.ts b/src/Logic/DetermineTheme.ts
index fed03a7ce..9da701591 100644
--- a/src/Logic/DetermineTheme.ts
+++ b/src/Logic/DetermineTheme.ts
@@ -108,8 +108,7 @@ export default class DetermineTheme {
         if (themeInfo === undefined) {
             const alternatives = Utils.sortedByLevenshteinDistance(
                 id,
-                themes.map((th) => th.id),
-                (i) => i
+                themes.map((th) => th.id)
             ).slice(0, 3)
             const msg = `No builtin map theme with name ${layoutId} exists. Perhaps you meant one of ${alternatives.join(
                 ", "
diff --git a/src/Models/MenuState.ts b/src/Models/MenuState.ts
index 9a616f015..e313899d3 100644
--- a/src/Models/MenuState.ts
+++ b/src/Models/MenuState.ts
@@ -111,8 +111,7 @@ export class MenuState {
                 "No tagRendering with id '" + highlightTagRendering + "'; maybe you meant:",
                 Utils.sortedByLevenshteinDistance(
                     highlightTagRendering,
-                    UserRelatedState.availableUserSettingsIds,
-                    (x) => x
+                    UserRelatedState.availableUserSettingsIds
                 )
             )
         }
diff --git a/src/Models/ThemeConfig/Conversion/ExpandFilter.ts b/src/Models/ThemeConfig/Conversion/ExpandFilter.ts
index cb74004e8..1674fcabf 100644
--- a/src/Models/ThemeConfig/Conversion/ExpandFilter.ts
+++ b/src/Models/ThemeConfig/Conversion/ExpandFilter.ts
@@ -259,8 +259,7 @@ export class ExpandFilter extends DesugaringStep<LayerConfigJson> {
             if (found === undefined) {
                 const suggestions = Utils.sortedByLevenshteinDistance(
                     filter,
-                    Array.from(ExpandFilter.predefinedFilters.keys()),
-                    (t) => t
+                    Array.from(ExpandFilter.predefinedFilters.keys())
                 )
                 context
                     .enter(filter)
diff --git a/src/Models/ThemeConfig/Conversion/ExpandTagRendering.ts b/src/Models/ThemeConfig/Conversion/ExpandTagRendering.ts
index d9fa5a35a..3af5888c2 100644
--- a/src/Models/ThemeConfig/Conversion/ExpandTagRendering.ts
+++ b/src/Models/ThemeConfig/Conversion/ExpandTagRendering.ts
@@ -387,8 +387,7 @@ export class ExpandTagRendering extends Conversion<
                         if (layer === undefined) {
                             const candidates = Utils.sortedByLevenshteinDistance(
                                 layerName,
-                                Utils.NoNull(Array.from(state.sharedLayers.keys())),
-                                (s) => s
+                                Utils.NoNull(Array.from(state.sharedLayers.keys()))
                             )
                             if (candidates.length === 0) {
                                 ctx.err(
@@ -419,7 +418,7 @@ export class ExpandTagRendering extends Conversion<
                         )
                     }
 
-                    candidates = Utils.sortedByLevenshteinDistance(name, candidates, (i) => i)
+                    candidates = Utils.sortedByLevenshteinDistance(name, candidates)
                     ctx.err(
                         "The tagRendering with identifier " +
                             name +
diff --git a/src/Models/ThemeConfig/Conversion/PrepareTheme.ts b/src/Models/ThemeConfig/Conversion/PrepareTheme.ts
index e156b5f9b..bbf154fc9 100644
--- a/src/Models/ThemeConfig/Conversion/PrepareTheme.ts
+++ b/src/Models/ThemeConfig/Conversion/PrepareTheme.ts
@@ -71,7 +71,8 @@ class SubstituteLayer extends Conversion<string | LayerConfigJson, LayerConfigJs
         for (const name of names) {
             const found = Utils.Clone(state.sharedLayers.get(name))
             if (found === undefined) {
-                context.err("Layer with name " + name + " not found")
+                const nearbyNames = Utils.sortedByLevenshteinDistance(name, Array.from(state.sharedLayers.keys()))
+                context.err("Layer with name " + name + " not found. Dit you mean one of "+nearbyNames.slice(0, 3))
                 continue
             }
             found["_basedOn"] = name
diff --git a/src/Models/ThemeConfig/Conversion/ValidateTheme.ts b/src/Models/ThemeConfig/Conversion/ValidateTheme.ts
index bee2c9dd4..c743efaac 100644
--- a/src/Models/ThemeConfig/Conversion/ValidateTheme.ts
+++ b/src/Models/ThemeConfig/Conversion/ValidateTheme.ts
@@ -167,7 +167,7 @@ export class ValidateTheme extends DesugaringStep<ThemeConfigJson> {
             )
             const available = new Set(knownIds)
             if (!isCategory && !available.has(backgroundId)) {
-                const nearby = Utils.sortedByLevenshteinDistance(backgroundId, knownIds, (t) => t)
+                const nearby = Utils.sortedByLevenshteinDistance(backgroundId, knownIds)
                 context
                     .enter("defaultBackgroundId")
                     .err(
diff --git a/src/Models/ThemeConfig/FilterConfig.ts b/src/Models/ThemeConfig/FilterConfig.ts
index 62eaa9453..ad6088bf7 100644
--- a/src/Models/ThemeConfig/FilterConfig.ts
+++ b/src/Models/ThemeConfig/FilterConfig.ts
@@ -65,8 +65,7 @@ export default class FilterConfig {
                     if (Validators.availableTypes.indexOf(type) < 0) {
                         throw `Invalid filter: type is not a valid validator. Did you mean one of ${Utils.sortedByLevenshteinDistance(
                             type,
-                            <ReadonlyArray<string>>Validators.availableTypes,
-                            (x) => x
+                            <ReadonlyArray<string>>Validators.availableTypes
                         ).slice(0, 3)}`
                     }
                     // Type is validated against 'ValidatedTextField' in Validation.ts, in ValidateFilterConfig
diff --git a/src/Models/ThemeConfig/TagRenderingConfig.ts b/src/Models/ThemeConfig/TagRenderingConfig.ts
index 3387c4426..75ae17a90 100644
--- a/src/Models/ThemeConfig/TagRenderingConfig.ts
+++ b/src/Models/ThemeConfig/TagRenderingConfig.ts
@@ -212,8 +212,7 @@ export default class TagRenderingConfig {
                     json.freeform.type
                 }, perhaps you meant ${Utils.sortedByLevenshteinDistance(
                     json.freeform.key,
-                    <any>Validators.availableTypes,
-                    (s) => <any>s
+                    Validators.availableTypes
                 )}. See https://source.mapcomplete.org/MapComplete/MapComplete/src/branch/develop/Docs/SpecialInputElements.md for more information`
             }
             const type: ValidatorType = <any>json.freeform.type ?? "string"
diff --git a/src/UI/InputElement/ValidatedInput.svelte b/src/UI/InputElement/ValidatedInput.svelte
index 1c9ccd4f8..a91cde102 100644
--- a/src/UI/InputElement/ValidatedInput.svelte
+++ b/src/UI/InputElement/ValidatedInput.svelte
@@ -166,8 +166,7 @@
       "'; did you perhaps mean one of: " +
       Utils.sortedByLevenshteinDistance(
         type,
-        Validators.AllValidators.map((v) => v.name),
-        (v) => v
+        Validators.AllValidators.map((v) => v.name)
       )
         .slice(0, 5)
         .join(", ")
diff --git a/src/UI/InputElement/Validators/DistanceValidator.ts b/src/UI/InputElement/Validators/DistanceValidator.ts
index ddf7c10f9..b51130159 100644
--- a/src/UI/InputElement/Validators/DistanceValidator.ts
+++ b/src/UI/InputElement/Validators/DistanceValidator.ts
@@ -47,7 +47,7 @@ export default class DistanceValidator extends Validator {
         if (bg && eliCategory.indexOf(bg) < 0) {
             return (
                 "The given background layer is not a recognized ELI-type. Perhaps you meant one of " +
-                Utils.sortedByLevenshteinDistance(bg, eliCategory, (x) => x).slice(0, 5)
+                Utils.sortedByLevenshteinDistance(bg, eliCategory).slice(0, 5)
             )
         }
         if (typeof args["zoom"] !== "number") {
diff --git a/src/UI/SpecialVisualisations/SettingsVisualisations.ts b/src/UI/SpecialVisualisations/SettingsVisualisations.ts
index b74264289..a6f2c7af0 100644
--- a/src/UI/SpecialVisualisations/SettingsVisualisations.ts
+++ b/src/UI/SpecialVisualisations/SettingsVisualisations.ts
@@ -198,7 +198,7 @@ class QrLogin extends SpecialVisualizationSvelte {
 class Logout extends SpecialVisualizationSvelte {
     funcName = "logout"
     args = []
-    needsUrls = [Constants.osmAuthConfig.url]
+    needsUrls = [Constants.osmAuthConfig]
     docs = "Shows a button where the user can log out"
     group = "settings"
 
diff --git a/src/Utils.ts b/src/Utils.ts
index d65a7e6fd..bfe46f1f7 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -1259,11 +1259,21 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         }
     }
 
+    public static sortedByLevenshteinDistance(
+        reference: string,
+        ts: ReadonlyArray<string>
+    ): string[]
     public static sortedByLevenshteinDistance<T>(
         reference: string,
         ts: ReadonlyArray<T>,
         getName: (t: T) => string
+    ): string[]
+    public static sortedByLevenshteinDistance<T>(
+        reference: string,
+        ts: ReadonlyArray<T>,
+        getName?: (t: T) => string
     ): T[] {
+        getName ??= (str) => <string> str;
         const withDistance: [T, number][] = ts.map((t) => [
             t,
             Utils.levenshteinDistance(getName(t), reference),