[FIFO] Error when running command

[mrPauwHaan]

Describe the bug I am getting this error when running [p]fifo addtrigger date

`Traceback (most recent call last): File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 229, in wrapped ret = await coro(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/data/cogs/CogManager/cogs/fifo/fifo.py", line 642, in fifo_trigger_date delta_from_now: timedelta = job.next_run_time - datetime.now(job.next_run_time.tzinfo) ^^^^^^^^^^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'next_run_time'

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/bot.py", line 1350, in invoke await ctx.command.invoke(ctx) File "/data/venv/lib/python3.11/site-packages/redbot/core/commands/commands.py", line 783, in invoke await super().invoke(ctx) File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 1642, in invoke await ctx.invoked_subcommand.invoke(ctx) File "/data/venv/lib/python3.11/site-packages/redbot/core/commands/commands.py", line 783, in invoke await super().invoke(ctx) File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 1642, in invoke await ctx.invoked_subcommand.invoke(ctx) File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 1023, in invoke await injected(*ctx.args, **ctx.kwargs) # type: ignore ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 238, in wrapped raise CommandInvokeError(exc) from exc discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'next_run_time'`