Fixing test case (didn't provide a schema).

packages/server/src/api/routes/tests/misc.spec.js

@@ -75,7 +75,11 @@ describe("run misc tests", () => {
         },
       })
       const dataImport = {
-        csvString: "a,b,c,d\n1,2,3,4"
+        csvString: "a,b,c,d\n1,2,3,4",
+        schema: {},
+      }
+      for (let col of ["a", "b", "c", "d"]) {
+        dataImport.schema[col] = { type: "string" }
       }
       await tableUtils.handleDataImport(
         config.getAppId(),

packages/server/src/utilities/csvParser.js

@@ -77,6 +77,9 @@ function parse(csvString, parsers) {
 }
 
 function updateSchema({ schema, existingTable }) {
+  if (!schema) {
+    return schema
+  }
   const finalSchema = {}
   const schemaKeyMap = {}
   Object.keys(schema).forEach(key => (schemaKeyMap[key.toLowerCase()] = key))