Multiple errors

After the latest update facing multiple errors in desktop version. Below are the few that i have experienced.

1. Transaction history for paid bills and partially-paid bills are missing

2. Unable to add any attachments for bills/payments, getting the following error""Call to a member function isValid() on array"

3.Unable to add payment for the bills, getting"SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'currency_rate' cannot be null (SQL: insert into `eba_transactions` (`amount`, `reference`, `document_id`, `category_id`, `currency_code`, `currency_rate`, `type`, `description`, `account_id`, `payment_method`, `paid_at`, `company_id`, `contact_id`, `updated_at`, `created_at`)" error

4. Tax value is not added to the total in bills.

5.Incorrect vendor names are added when some other name is chose in the drop down during new bill creation

6.Unable to open desktop app ,getting following error'Warning: require(/app/Console/Commands/BillReminder.php): failed to open stream: No such file or directory in /vendor/autoload.php on line 9

Fatal error: require(): Failed opening required '/app/Console/Commands/BillReminder.php' (include_path='.:/usr/share/php') in /vendor/autoload.php on line 9

Kindly look into it as soon as possible