use int.Parse

MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs

@@ -55,7 +55,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
                 return Enumerable.Empty<RemoteImageInfo>();
             }
 
-            var personResult = await _tmdbClientManager.GetPersonAsync(Convert.ToInt32(personTmdbId), cancellationToken).ConfigureAwait(false);
+            var personResult = await _tmdbClientManager.GetPersonAsync(int.Parse(personTmdbId, CultureInfo.InvariantCulture), cancellationToken).ConfigureAwait(false);
             if (personResult?.Images?.Profiles == null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();

MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonProvider.cs

@@ -32,7 +32,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
         {
             if (searchInfo.TryGetProviderId(MetadataProvider.Tmdb, out var personTmdbId))
             {
-                var personResult = await _tmdbClientManager.GetPersonAsync(Convert.ToInt32(personTmdbId), cancellationToken).ConfigureAwait(false);
+                var personResult = await _tmdbClientManager.GetPersonAsync(int.Parse(personTmdbId, CultureInfo.InvariantCulture), cancellationToken).ConfigureAwait(false);
 
                 if (personResult != null)
                 {