fix: more informative error messages

- set currency columns as not null

backends/database.js

@@ -163,7 +163,10 @@ module.exports = class Database extends Observable {
     }
 
     // required
-    if (!!field.required && !(field.required instanceof Function)) {
+    if (
+      (!!field.required && !(field.required instanceof Function)) ||
+      field.fieldtype === 'Currency'
+    ) {
       column.notNullable();
     }
 

model/document.js

@@ -668,7 +668,12 @@ module.exports = class BaseDocument extends Observable {
       .map((d) => {
         const value = d[childfield] ?? 0;
         if (!isPesa(value)) {
-          return frappe.pesa(value);
+          try {
+            return frappe.pesa(value);
+          } catch (err) {
+            err.message += ` value: '${value}' of type: ${typeof value}, fieldname: '${tablefield}', childfield: '${childfield}'`;
+            throw err;
+          }
         }
         return value;
       })