fix(client): check businesTypeFk before clientCredit insert

modules/client/back/models/client.js

@@ -374,11 +374,14 @@ module.exports = Self => {
                 throw new UserError(`You don't have enough privileges to set this credit amount`);
         }
 
+        const client = await models.Client.findById(finalState.id, null, ctx.options);
+        if (client.businessTypeFk) {
             await models.ClientCredit.create({
                 amount: changes.credit,
                 clientFk: finalState.id,
                 workerFk: userId
             }, ctx.options);
+        }
     };
 
     const app = require('vn-loopback/server/server');