1-samples_selection.py for server correct display

src/pages/1-samples_selection.py

@@ -155,9 +155,9 @@ if not spectra.empty:
 
     with c2:
         st.write('Data summary:')
-        st.write('- the number of spectra:'+spectra.shape[0])
-        st.write('- the number of wavelengths:'+spectra.shape[1])
-        st.write('- the number of categorical variables:'+meta_data.shape[1])
+        st.write('- the number of spectra:'+ str(spectra.shape[0]))
+        st.write('- the number of wavelengths:'+ str(spectra.shape[1]))
+        st.write('- the number of categorical variables:'+ str(meta_data.shape[1]))
 ################################################### END : I- Data loading and preparation ####################################################