Add command to reset rate limit for error emails.

app/Console/Commands/System/ResetsErrorMailLimit.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace FireflyIII\Console\Commands\System;
+
+use FireflyIII\Console\Commands\ShowsFriendlyMessages;
+use Illuminate\Console\Command;
+use Symfony\Component\Console\Command\Command as CommandAlias;
+
+class ResetsErrorMailLimit extends Command
+{
+    use ShowsFriendlyMessages;
+
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'firefly-iii:reset-error-mail-limit';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Resets the number of error mails sent.';
+
+    /**
+     * Execute the console command.
+     */
+    public function handle(): int
+    {
+        $file      = storage_path('framework/cache/error-count.json');
+        $directory = storage_path('framework/cache');
+        $limits    = [];
+
+        if (!is_writable($directory)) {
+            $this->friendlyError(sprintf('Cannot write to directory "%s", cannot rate limit errors.', $directory));
+
+            return CommandAlias::FAILURE;
+        }
+        if (!file_exists($file)) {
+            $this->friendlyInfo(sprintf('Created new limits file at "%s"', $file));
+            file_put_contents($file, json_encode($limits, JSON_PRETTY_PRINT));
+            return CommandAlias::SUCCESS;
+        }
+        if (!is_writable($file)) {
+            $this->friendlyError(sprintf('Cannot write to "%s", cannot rate limit errors.', $file));
+
+            return CommandAlias::FAILURE;
+        }
+
+        $this->friendlyInfo(sprintf('Successfully reset the error rate-limits file located at "%s"', $file));
+        file_put_contents($file, json_encode($limits, JSON_PRETTY_PRINT));
+
+        return CommandAlias::SUCCESS;
+    }
+}