Running examples in ‘ursa-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: spatial_read
> ### Title: Wrapper functions for reading spatial objects.
> ### Aliases: spatial_read
> ### Keywords: attribute
> 
> ### ** Examples
> 
> session_grid(NULL)
> n <- 1e2
> x <- runif(n,min=25,max=65)
> y <- runif(n,min=55,max=65)
> z <- runif(n,min=1,max=10)
> da <- data.frame(x=x,y=y,z=z)
> if (requireNamespace("sf",quietly=TRUE)) {
+    obj1 <- sf::st_as_sf(da,coords=c("x","y"),crs=4326)
+    print(series(obj1))
+    fname1 <- file.path(tempdir(),"res1.shp")
+    print(fname1)
+    spatial_write(obj1,fname1)
+    res1 <- spatial_read(fname1,engine="sf")
+    print(series(res1))
+ }
Simple feature collection with 6 features and 1 field
Geometry type: POINT
Dimension:     XY
Bounding box:  xmin: 35.62035 ymin: 57.7026 xmax: 57.43481 ymax: 63.40507
Geodetic CRS:  WGS 84
           z                  geometry
1   3.407574 POINT (35.62035 61.54724)
2   2.967808 POINT (39.88496 58.53197)
3   5.651172  POINT (47.91413 57.7026)
98  2.070123 POINT (41.40336 63.40507)
99  1.453957 POINT (57.43481 58.17964)
100 9.363285 POINT (49.19733 62.82851)
[1] "/tmp/RtmprypFPH/res1.shp"
Simple feature collection with 6 features and 1 field
Geometry type: POINT
Dimension:     XY
Bounding box:  xmin: 35.62035 ymin: 57.7026 xmax: 57.43481 ymax: 63.40507
Geodetic CRS:  WGS 84
           z                  geometry
1   3.407574 POINT (35.62035 61.54724)
2   2.967808 POINT (39.88496 58.53197)
3   5.651172  POINT (47.91413 57.7026)
98  2.070123 POINT (41.40336 63.40507)
99  1.453957 POINT (57.43481 58.17964)
100 9.363285 POINT (49.19733 62.82851)
> if (requireNamespace("sp")) {
+    obj2 <- da
+    sp::coordinates(obj2) <- c("x","y")
+    sp::proj4string(obj2) <- sp::CRS("+init=epsg:4326")
+    print(series(obj2))
+    print(spatial_crs(obj2))
+    fname2 <- file.path(tempdir(),"res2.shp")
+    print(fname2)
+    spatial_write(obj2,fname2)
+    res2 <- spatial_read(fname2,engine="sp")
+    print(series(obj2))
+ }
             coordinates        z
1   (35.62035, 61.54724) 3.407574
2   (39.88496, 58.53197) 2.967808
3    (47.91413, 57.7026) 5.651172
98  (41.40336, 63.40507) 2.070123
99  (57.43481, 58.17964) 1.453957
100 (49.19733, 62.82851) 9.363285
[1] "+proj=longlat +datum=WGS84 +no_defs"
[1] "/tmp/RtmprypFPH/res2.shp"
Error in iconv(fld_names, from = encoding, to = "UTF-8") : 
  unsupported conversion from 'NA' to 'UTF-8'
Calls: spatial_write -> <Anonymous> -> iconv
Execution halted